Experimental Demonstration of Secure Quantum Remote Sensing

Yin, Peng; Takeuchi, Yuki; Zhang, Wen-Hao; Yin, Zhen-Qiang; Matsuzaki, Yuichiro; Peng, Xi; Xu, Xiao‐Ye; Xu, Jin‐Shi; Tang, Jian‐Shun; Zhou, Zong‐Quan; Chen, Geng; Li, Chuan‐Feng; Guo, Guang‐Can

doi:10.1103/physrevapplied.14.014065

Cited by 20 publications

(6 citation statements)

References 38 publications

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“…The protocol that we have proposed can not only be applicable for quantum repeaters but also in certain schemes of quantum cryptography for which the distribution of entangled states is necessary, such as quantum cryptography, distributed quantum computing, and quantum sensing. For instance, one such feasibility is in the counterfactual distributed quantum sensing [49,50] and corresponding secure counterparts [51]. This requires more attention to optimization [46] of counterfactual quantum network.…”

Section: Discussionmentioning

confidence: 99%

Quantum networks using counterfactual quantum communication

Warke,

Thapliyal,

Pathak

2024

Phys. Scr.

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Counterfactual quantum communication is one of the most interesting facets of quantum communication, allowing two parties to communicate without any transmission of quantum or classical particles between the parties involved in the communication process. This aspect of quantum communication originates from the interaction-free measurements where the chained quantum Zeno effect plays an important role. Here, we propose a new counterfactual quantum communication protocol for transmitting an entangled state from a pair of electrons to two independent photons. Interestingly, the protocol proposed here shows that the counterfactual method can be employed to transfer information from house qubits to flying qubits. Following this, we show that the protocol finds uses in building quantum repeaters leading to a counterfactual quantum network, enabling counterfactual communication over a linear quantum network. 

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Section: Discussionmentioning

confidence: 99%

Quantum networks using counterfactual quantum communication

Warke,

Thapliyal,

Pathak

2024

Phys. Scr.

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“…Furthermore, as our multiparameter estimation involves multiple distinct parties, it may be of relevance for distributed quantum sensing 82 or other scenarios where a remote parameter is being probed, such as gravitational field sensing 83 . Our sensing protocol may also be beneficial for the remote sensing of confidential information, such as medical information, as has been discussed for secure quantum enhanced sensing 75,[84][85][86][87][88][89][90][91] (see also Refs. 92,93 ).…”

Section: Discussionmentioning

confidence: 99%

Verifying the security of a continuous variable quantum communication protocol via quantum metrology

Conlon,

Shajilal,

Walsh

et al. 2024

npj Quantum Inf

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Quantum mechanics offers the possibility of unconditionally secure communication between multiple remote parties. Security proofs for such protocols typically rely on bounding the capacity of the quantum channel in use. In a similar manner, Cramér-Rao bounds in quantum metrology place limits on how much information can be extracted from a given quantum state about some unknown parameters of interest. In this work we establish a connection between these two areas. We first demonstrate a three-party sensing protocol, where the attainable precision is dependent on how many parties work together. This protocol is then mapped to a secure access protocol, where only by working together can the parties gain access to some high security asset. Finally, we map the same task to a communication protocol where we demonstrate that a higher mutual information can be achieved when the parties work collaboratively compared to any party working in isolation.

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“…Differently from protocols involving only homodyne measurements at a single channel, here there is no need for a refocusing auxiliary stage: the procedure is independent of the network and of the value of the parameter. This allows us to safely entrust the measurement operation to an independent party without sharing any information on the structure of the network, possibly opening up a further path towards secure sensing and cryptographic quantum metrology [39][40][41]. On the other hand, we showed that, despite not required to achieve the Heisenberg limit, one can still employ an auxiliary stage to further enhance the estimation precision by a constant factor.…”

Section: Discussionmentioning

confidence: 99%

Non-adaptive Heisenberg-limited metrology with multi-channel homodyne measurements

2022

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We show a protocol achieving the ultimate Heisenberg-scaling sensitivity in the estimation of a parameter encoded in a generic linear network, without employing any auxiliary networks, and without the need of any prior information on the parameter nor on the network structure. As a result, this protocol does not require a prior coarse estimation of the parameter, nor an adaptation of the network. The scheme we analyse consists of a single-mode squeezed state and homodyne detectors in each of the M output channels of the network encoding the parameter, making it feasible for experimental applications.

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Experimental Demonstration of Secure Quantum Remote Sensing

Cited by 20 publications

References 38 publications

Quantum networks using counterfactual quantum communication

Quantum networks using counterfactual quantum communication

Verifying the security of a continuous variable quantum communication protocol via quantum metrology

Non-adaptive Heisenberg-limited metrology with multi-channel homodyne measurements

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