Experimental multiparty sequential state discrimination

Solís-Prosser, M. A.; González, P.; Fuenzalida, Jorge; Gómez, Santiago; Xavier, G. B.; Delgado, A.; Lima, G.

doi:10.1103/physreva.94.042309

Cited by 25 publications

(19 citation statements)

References 39 publications

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“…6(a–d) , we can see that optimal sequential state discrimination can be achieved using the Banaszek model or the Huttner-like model. This result implies that the proof-of-principle experiment of sequential state discrimination can be performed using not only polarized photon states 32 but also coherent states. Therefore, we can obtain multiparty QKD of coherent states by sequential state discrimination of these states.…”

Section: Resultsmentioning

confidence: 87%

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Sequential state discrimination of coherent states

Namkung

Kwon

2018

Sci Rep

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Sequential state discrimination is a strategy for quantum state discrimination of a sender’s quantum states when N receivers are separately located. In this report, we propose optical designs that can perform sequential state discrimination of two coherent states. For this purpose, we consider not only binary phase-shifting-key (BPSK) signals but also general coherent states, with arbitrary prior probabilities. Since our optical designs do not include electric feedback, they can be implemented without difficulty. Furthermore, we analyze our proposal for the case of photon loss. We also demonstrate that sequential state discrimination of two coherent states performs better than the probabilistic quantum cloning strategy. This proposal can facilitate multiparty QKD based on coherent states.

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Section: Resultsmentioning

confidence: 87%

“…Recently, M. A. Solis-Prosser et al . 32 developed an optical design for sequential state discrimination of non-orthogonal two polarized photon states. In this report, we propose optical designs for sequential state discrimination of two arbitrary coherent states, which can produce an optimal success probability.…”

Section: Introductionmentioning

confidence: 99%

Sequential state discrimination of coherent states

Namkung

Kwon

2018

Sci Rep

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“…The optimal success probability of sequential state discrimination for two pure qubits with identical prior probabilities was analytically provided by Bergou et al . 21 , 23 , which was shown in experiment 24 . A solution to sequential state discrimination for two pure qubits with arbitrary prior probabilities was suggested by Zhang et al .…”

Section: Introductionmentioning

confidence: 56%

Analysis of Optimal Sequential State Discrimination for Linearly Independent Pure Quantum States

Namkung

Kwon

2018

Sci Rep

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Recently, J. A. Bergou et al. proposed sequential state discrimination as a new quantum state discrimination scheme. In the scheme, by the successful sequential discrimination of a qubit state, receivers Bob and Charlie can share the information of the qubit prepared by a sender Alice. A merit of the scheme is that a quantum channel is established between Bob and Charlie, but a classical communication is not allowed. In this report, we present a method for extending the original sequential state discrimination of two qubit states to a scheme of N linearly independent pure quantum states. Specifically, we obtain the conditions for the sequential state discrimination of N = 3 pure quantum states. We can analytically provide conditions when there is a special symmetry among N = 3 linearly independent pure quantum states. Additionally, we show that the scenario proposed in this study can be applied to quantum key distribution. Furthermore, we show that the sequential state discrimination of three qutrit states performs better than the strategy of probabilistic quantum cloning.

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“…Thus, Bob's success probability can also be acquired according to Eq. (19). Nevertheless, because the subspace spanned by {|α 1 , |α 2 } is not orthogonal to the one spanned by {|α 1 , |α 2 } anymore, it is difficult to optimize the success probability.…”

Section: Mixed-state Discrimination Via Local Operationsmentioning

confidence: 99%

Discriminating bipartite mixed states by local operations

Zhang

Wang

et al. 2020

Phys. Rev. A

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Unambiguous state discrimination of two mixed bipartite states via local operations and classical communications (LOCC) is studied and compared with the result of a scheme realized via global measurement. We show that the success probability of a global scheme for mixed-state discrimination can be achieved perfectly by the local scheme. In addition, we simulate this discrimination via a pair of pure entangled bipartite states. This simulation is perfect for local rather than global schemes due to the existence of entanglement and global coherence in the pure states. We also prove that LOCC protocol and the sequential state discrimination (SSD) can be interpreted in a unified view. We then hybridize the LOCC protocol with three protocols (SSD, reproducing and broadcasting) relying on classical communications. Such hybridizations extend the gaps between the optimal success probability of global and local schemes, which can be eliminated only for the SSD rather than the other two protocols.

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Experimental multiparty sequential state discrimination

Cited by 25 publications

References 39 publications

Sequential state discrimination of coherent states

Sequential state discrimination of coherent states

Analysis of Optimal Sequential State Discrimination for Linearly Independent Pure Quantum States

Discriminating bipartite mixed states by local operations

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