Semi-device-independent quantum money with coherent states
arXiv:1812.09256 · doi:10.1103/PhysRevA.99.022336
Abstract
The no-cloning property of quantum mechanics allows unforgeability of quantum banknotes and credit cards. Quantum credit card protocols involve a bank, a client and a payment terminal, and their practical implementation typically relies on encoding information on weak coherent states of light. Here, we provide a security proof in this practical setting for semi-device-independent quantum money with classical verification, involving an honest bank, a dishonest client and a potentially untrusted terminal. Our analysis uses semidefinite programming in the coherent state framework and aims at simultaneously optimizing over the noise and losses introduced by a dishonest party. We discuss secure regimes of operation in both fixed and randomized phase settings, taking into account experimental imperfections. Finally, we study the evolution of protocol security in the presence of a decohering optical quantum memory and identify secure credit card lifetimes for a specific configuration.
arXiv comment10 pages, 2 figures
References in corpus (22)
- Quantum Cryptography
- The Security of Practical Quantum Key Distribution
- Measurement-device-independent quantum key distribution
- Device-independent security of quantum cryptography against collective attacks
- One-sided Device-Independent Quantum Key Distribution: Security, feasibility, and the connection with steering
- Practical challenges in quantum key distribution
- Side-channel-free quantum key distribution
- Quantum memories: emerging applications and recent advances
- Semi-device-independent security of one-way quantum key distribution
- Highly-Efficient Quantum Memory for Polarization Qubits in a Spatially-Multiplexed Cold Atomic Ensemble
- Squashing Models for Optical Measurements in Quantum Communication
- Semi-device-independent framework based on natural physical assumptions
- Semi-device-independent bounds on entanglement
- Unforgeable Noise-Tolerant Quantum Tokens
- Experimental quantum key distribution with active phase randomization
- Experimental investigation of practical unforgeable quantum money
- Squashing model for detectors and applications to quantum key distribution protocols
- Experimental quantum forgery of quantum optical money
- Interference of short optical pulses from independent gain-switched laser diodes for quantum secure communications
- Quantum money with nearly optimal error tolerance
- Experimental preparation and verification of quantum money
- Key rate for calibration robust entanglement based BB84 quantum key distribution protocol
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- Practical quantum tokens without quantum memories and experimental tests
- Security Analysis of Ensemble-Based Quantum Token Protocol Under Advanced Attacks
- Information-theoretically secure quantum timestamping with one-time universal hashing