QUANTUM COMPUTING TECHNOLOGY IN LAW 

Introduction

Quantum computing is a fast-growing technology that may greatly change many parts of life, including the legal field. Quantum computers can do certain types of calculations much faster than normal computers. This may lead to major progress in areas like cryptography, artificial intelligence, and drug discovery.

At the same time, quantum computing also creates serious risks, especially for cybersecurity and privacy. For example, quantum computers may be able to break the encryption methods that currently protect online data and communication. Because of this, there is a strong need for legal rules to control and guide quantum computing technology. A proper legal framework can protect both innovators and users, while also reducing the dangers caused by this technology.

Lawyers and policymakers can take several useful steps when creating rules for quantum computing. They should involve all important stakeholders, such as researchers, developers, companies, consumers, and privacy groups. This will help make the rules fair and practical. The law should also be flexible, because quantum technology is changing very quickly. Instead of making very strict rules, lawmakers may focus on basic principles. They should pay special attention to important issues like cybersecurity, privacy, and intellectual property. This will make the legal framework more effective and useful.

Many government agencies and legal bodies are already taking steps to regulate quantum computing. For example, the United States has set up the National Quantum Initiative, which is a joint effort by several agencies to speed up research and development in quantum computing. The European Union has also launched programs like the Quantum Technologies Flagship to support this field. At the same time, legal organizations are creating resources to help lawyers and policymakers understand the legal issues related to quantum computing. For example, The National Quantum Mission (NQM) is a ?6,003.65 crore initiative (2023–2031) to establish India as a global leader in quantum technology. By May 2026, the mission achieved a major milestone by completing 1,000 km of secure quantum communication in just three years, aiming to develop intermediate-scale quantum computers with 50-1000 physical qubits within eight years.

Quantum computing is a powerful new technology that may change the legal world. But it is important to create legal rules in advance so that this technology can be controlled properly. This will help protect both innovators and consumers, and reduce the risks of misuse.

In the future, quantum computers could help solve important legal problems. They may be used to detect and prosecute crime, settle disputes faster, and create fairer laws. This future is possible only if there are proper legal rules to make sure quantum computing is used responsibly and not for harm.

Lawyers and policymakers will play a major role in shaping how quantum computing develops in law. By working together, they can create rules that encourage innovation, protect the public, and make sure the benefits are shared fairly. Quantum computing may also help create much stronger forms of artificial intelligence. This could deeply affect the legal profession, because AI may become capable of doing tasks that are now done only by human lawyers.

Why quantum technology matters for law

Quantum technology, especially quantum computing, is becoming important for the legal field because it can affect privacy, cybersecurity, encryption, artificial intelligence, intellectual property, and court processes. In simple terms, quantum computers may solve some problems much faster than normal computers. That creates both opportunities and legal risks.

1. Cybersecurity and encryption

Quantum computing matters for law because it may seriously affect cybersecurity and encryption, which are the foundation of digital trust in modern society. At present, most online communication, banking systems, government databases, court systems, and private business records depend on encryption methods that are considered secure against ordinary computers. However, powerful quantum computers may eventually be able to break many of these encryption methods much faster than classical computers. If that happens, confidential client information, court documents, investigation records, financial transactions, and even sensitive government communication could become exposed. This creates a major legal concern because the law increasingly depends on the secure storage and transfer of digital information. Lawyers, courts, regulators, and businesses all rely on encrypted systems for confidentiality, evidentiary integrity, and compliance. If encryption is weakened, it may lead to theft of data, fraud, identity misuse, breaches of privilege, and manipulation of evidence. In legal practice, client confidentiality is especially important, and a failure in cyber protection could create ethical and professional liability issues. Governments and institutions may therefore need to prepare in advance by adopting quantum-safe or post-quantum encryption standards. From a legal point of view, this is not only a technical issue but also a matter of accountability, privacy, national security, and public trust. In the future, legal rules may need to require stronger cyber standards, periodic security upgrades, and mandatory risk assessments to ensure that sensitive legal and personal data remains protected in a quantum era.

Example:

As of May 2026, the intersection of Instagram's encryption policies and quantum technology is creating a complex legal landscape concerning user privacy, data security, and legal oversight. As Instagram moves away from default end-to-end encryption (E2EE) for Direct Messages, towards a system that allows server-side access, the impending threat of quantum computing makes this a critical legal turning point.

Legal Impact of Removing End-to-End Encryption 

1. Reduced Privacy Protection: By removing end-to-end encryption, Meta can now access and store Instagram DMs in a company-readable format. 

2. Legal Access: In the US and globally, this means law enforcement can send subpoenas, search warrants, or "legal requests" to Meta to obtain user data; whereas end-to-end encryption would have made it technologically impossible to decipher messages. 

3. Security and Privacy: While lawmakers and child protection groups generally advocate for this change to detect illegal activity, privacy advocates argue it exposes users to widespread surveillance.

2. Data protection and privacy

Quantum technology also matters for law because it can directly affect data protection and privacy. Today, individuals and organizations store large amounts of personal information online, including names, addresses, financial details, health records, biometric data, and communication history. Much of this data is protected through encryption and other security methods. If quantum computers become powerful enough to weaken or break these protections, personal data may become much easier to access without permission. This creates serious legal risks because privacy is a fundamental concern in modern law, especially in a digital economy where almost every service depends on data collection and processing. In India, this issue is particularly relevant under the Digital Personal Data Protection Act, 2023, which places responsibilities on entities handling personal data to ensure proper protection and lawful use. If quantum threats make existing safeguards outdated, companies and institutions may face greater exposure to compliance failures, consumer harm, and legal penalties. The law may then need to evolve by requiring stronger encryption standards, better security audits, and more responsible data governance. Privacy law will also need to address questions such as who is responsible when quantum-related breaches occur, what remedies affected individuals should have, and how organizations can demonstrate due diligence. In this sense, quantum technology is not just a future scientific development; it is also a present legal planning issue. Policymakers may need to think ahead and build rules that protect personal data before quantum threats become practical and widespread. This is essential for maintaining digital privacy, user confidence, and lawful data processing in both the public and private sectors.

3. Artificial intelligence

Quantum computing matters for law because it may make artificial intelligence much more powerful, and that can create both opportunities and legal problems. AI systems already play a growing role in legal research, document review, predictive analytics, and decision support. If quantum computing is combined with AI, the speed and capacity of such systems could increase dramatically. That may allow machines to process huge datasets, identify patterns, and generate outputs far beyond current levels. While this could improve efficiency, it also raises difficult legal questions. For example, if an AI system makes a wrong recommendation, produces a biased result, or causes harm, who should be legally responsible? Should the responsibility lie with the developer, the user, the company deploying the tool, or the institution relying on it? These are major issues of liability. There are also questions of fairness and transparency. If AI systems are trained on incomplete or biased data, they may reproduce or amplify discrimination. In the legal field, this is especially concerning because fairness and due process are core values. Lawyers and judges must be able to understand and challenge the basis of any automated suggestion or decision. If quantum-enhanced AI becomes opaquer because of its complexity, the law may need stronger transparency requirements, audit duties, and explainability standards. Regulation will also become important to prevent misuse in areas such as criminal justice, employment, insurance, and legal services. Therefore, quantum technology matters because it may transform AI from a useful tool into a much more powerful system with wide legal consequences. The challenge for law will be to allow innovation while ensuring accountability, human oversight, and protection against harm.

4. Intellectual property

Quantum technology also matters for law because it may affect intellectual property rights in major ways. Intellectual property law protects inventions, creative work, designs, software, and confidential business information. Quantum systems may help researchers and companies create new products, materials, medicines, and technical methods much faster than before. This can encourage innovation and lead to valuable economic growth. However, it can also create complex legal issues about ownership and originality. For example, if a quantum computing system helps generate a new invention, who is the true inventor? Is it the programmer, the company that owns the machine, the researcher who gave the input, or the system itself? Similar questions already arise in AI-related inventions, and quantum technology may make them even more complicated. Patent law may need to clarify what counts as a patentable quantum invention and how human contribution should be measured. There may also be concerns about trade secrets, because companies may use quantum processes to develop highly valuable information that they do not want to disclose. At the same time, intellectual property disputes may increase if quantum systems are used to copy, analyze, or reverse-engineer protected technologies more efficiently. Courts and lawmakers will therefore need to rethink how traditional IP rules apply in a world where machines can assist in generating novel outputs at extraordinary speed. This means quantum technology is not only a scientific advancement but also a legal challenge that may require updates to patent, copyright, and trade secret law. The goal will be to encourage innovation while making sure that ownership rights remain clear, fair, and enforceable.

5. Judicial administration

Quantum technology matters for law because it may eventually improve judicial administration and the functioning of legal systems. Courts and legal institutions handle enormous amounts of data, including case files, evidence, schedules, judgments, and records. Quantum tools may one day help process this information more quickly and efficiently. For example, they could support legal research by analysing large bodies of case law in less time, help with scheduling by managing court calendars better, assist in fraud detection by identifying unusual patterns, and improve dispute resolution by supporting faster evaluation of complex information. In theory, quantum computing may also help judges and legal administrators make better use of resources and reduce delays. This could be valuable in countries where case backlogs are a major problem. However, the use of such technology in the justice system must be handled very carefully. Courts must ensure that automated tools do not replace human judgment where legal reasoning, fairness, and discretion are required. There is also a risk that if quantum-enabled tools are not properly tested, they could produce inaccurate results or hidden biases. Legal decisions must remain transparent, reviewable, and consistent with due process. Therefore, while quantum technology may eventually become a useful support tool for judicial administration, it should be regulated with caution. Standards may be needed for accuracy, security, accountability, and ethical use. In the long run, quantum technology could help courts work more efficiently and fairly, but only if it is introduced in a controlled and legally responsible way.

Landmark judgment

•  Justice K. S. Puttaswamy (Retd.) and Anr. vs Union Of India And Ors.

The case of Judge K.S. Puttaswamy v. Union of India (2017) established privacy as a fundamental right under Article 21 of the Constitution, creating a constitutional, legal, and ethical framework applicable to all advanced technologies, including quantum technology. This landmark decision in 2017 directly regulates how data processed by future technologies such as quantum computing and cryptography should be protected, ensuring the safeguarding of individual autonomy and privacy against technological surveillance.

Relevance of the judgment to quantum technology

This case is highly relevant to quantum technology because quantum computing may one day weaken current encryption systems. If encryption becomes easier to break, then personal data, financial records, medical records, court files, and government communications could become more vulnerable. That directly raises the privacy concerns recognized in Puttaswamy.

1. Quantum computing and informational privacy

Quantum computers may be able to defeat existing cryptographic systems that protect sensitive data. If that happens, the constitutional right to privacy recognized in Puttaswamy becomes even more important, because the State and private entities will have a stronger duty to secure personal data.

2. Quantum surveillance concerns

If quantum tools are used together with advanced surveillance systems or AI, they may increase the State’s ability to collect, process, and analyze personal information. Puttaswamy is relevant here because the Court specifically warned against unrestricted intrusion into personal autonomy and informational privacy.

3. Need for quantum-safe data protection

The judgment supports the argument that India must move toward stronger data protection standards. In the quantum era, this may mean:

• quantum-resistant encryption,

• stronger cyber governance,

• updated privacy compliance rules,

• and legal safeguards against mass data exposure.

4. Constitutional basis for future regulation

Because Puttaswamy made privacy a constitutional right, it gives a strong legal foundation for future laws regulating quantum technology, especially where data protection, surveillance, and digital security are involved.

In response, Parliament enacted the Digital Personal Data Protection Act, 2023 (DPDP Act) in August 2023. This Act aims to establish a modern framework for digital personal data, but its effectiveness remains in question given delayed commencement and broad exemptions. As of late 2025, core provisions are only now being notified. In this essay we critically evaluate the DPDP Act’s key features, enforcement challenges, and implications for privacy rights and business compliance. We compare it with the previous regime under the IT Act 2000, and situate it in India’s constitutional context (especially Art. 21 and Puttaswamy).

Sudha Murty Deepfake Cyber Fraud Case

The matter regarding Sudha Murthy and "Quantum Technology" is a massive, AI-generated deepfake scam, not a legitimate investment opportunity or technology endorsement. Fraudsters have used artificial intelligence to clone her voice and likeness, creating fake videos that show her promoting a fraudulent investment platform often referred to as "Quantum AI" or "Quantum AI India". 

Legal Facts and Context

1. Fabrication of Evidence: The videos are doctored, with artificial intelligence voice cloning used to make it appear as though Murthy is endorsing the platform. Fact-checkers found the original footage was taken from a 2023 interview where she discussed philanthropy, not investments.

2. Fraudulent Nature: The "Quantum AI" platform is a fake investment scheme designed to steal personal data and money. It promises exorbitant returns, such as earning ?10 lakh per month or converting a ?21,000 investment into ?17 lakh in 28 days.

3. Action Taken by Sudha Murthy: Murthy has publicly stated she never discusses money or investment opportunities. She has confirmed these are deepfakes, filed a police complaint, and urged the public to ignore these videos.

4. Victims and Losses: The scam has targeted individuals, with reports of a 59-year-old man from Pune losing ?43 lakh after believing a similar deepfake video of Murthy and her husband, Narayana Murthy.

5. Legal Standing: The creation and dissemination of these videos constitute criminal activities including cyber fraud, identity theft, and impersonation under India's cybercrime laws.

Future outlook of quantum computing in the legal field

1. Long-term implications of quantum computing on the legal field

Quantum computing can significantly transform the legal field by accelerating legal research, improving legal analysis, and helping to resolve disputes more efficiently. It can rapidly analyze large amounts of legal data, identify key patterns, and assist lawyers in predicting case outcomes or choosing better legal strategies. It can also support faster and cheaper dispute resolution methods such as mediation and arbitration. However, the use of quantum computing also raises concerns about transparency, fairness, accountability, and unequal access to advanced technology. Therefore, lawyers, policymakers, technologists, and ethicists must work together to ensure its fair and responsible use within the legal system.

2. Potential changes in legal practice and the development of quantum-based legal tech solutions

Quantum computing can transform legal practice by offering advanced legal technology tools such as quantum-based legal analysis, contract analysis software, and faster electronic evidence gathering systems. These tools can save lawyers time and money by helping them predict case outcomes, efficiently review complex contracts, and process large amounts of document more quickly and accurately. Quantum technology can also create new legal service models for contract drafting, compliance, and risk management. However, challenges such as high costs, technical complexity, unequal access, and risks to privacy and data security remain significant concerns. Therefore, the legal sector will need robust cybersecurity measures, ethical codes, and careful regulation before widespread adoption of these technologies.

3. Preparing the legal workforce for the quantum era

As quantum computing becomes increasingly influential in the legal field, preparing the legal workforce for the quantum age is crucial. Lawyers, judges, students, and legal professionals will need fundamental knowledge of quantum technology and its impact on areas such as privacy, evidence, contracts, and regulations. Law schools and professional training programs can incorporate quantum-related topics into their curricula, while law firms can invest in continuous learning through workshops and collaborations with technology experts. Simultaneously, promoting diversity, equity, and inclusion in both the legal and quantum sectors is vital to ensure that the benefits of quantum computing are shared fairly and developed with a wide range of perspectives and public interests in mind.

Conclusion

The quantum era is coming soon, and the legal profession must start preparing for it now. Lawyers, judges, law students, and legal institutions will need basic training in quantum computing and in how it may affect the law. Law schools and other legal organizations should work on building knowledge and skills related to this new technology. At the same time, they must also make sure that people from different backgrounds, communities, and genders are included in the future quantum workforce. Quantum computing can create many new opportunities for the legal field, but it can also create serious challenges. To deal with this properly, legal professionals should take a forward-looking approach and work together with experts from technology, policy, and ethics. If they do this, they can help make sure that quantum technology is used in a fair, lawful, and responsible way that protects people’s rights and benefits society as a whole.

Written By- Preeti Chauhan