Quantum coordinated multi-point communication based on entanglement swapping

Du, Gang; Shang, Tao; Liu, Jianwei

doi:10.1007/s11128-017-1558-2

Cited by 3 publications

(1 citation statement)

References 12 publications

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“…Recently, a more general hierarchy between NAQC, entanglement, and Bell nonlocality was established in [36][37][38]. Du et al [19] have showed that local noise has a decoherence effect on the NAQC. Zhang et al [20] have studied the reduction of entropic uncertainty in entangled qubit systems by performing a local parity-time (PT)-symmetric operation.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the nonlocal advantage of quantum coherence by local parity-time (PT)-symmetric operation

Wang

Sun

et al. 2019

Laser Phys. Lett.

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In this letter, we explore the dynamics and protection of nonlocal advantage of quantum coherence (NAQC) for an entangled two-qubit system subjected to a noisy environment by performing parity-time (PT) symmetric operations on one of the two particles. For comparison, we investigate the protection of Bell nonlocality, quantum coherence, and entanglement by local PT-symmetric operations. Here, we show that the NAQC, Bell nonlocality, quantum coherence, and entanglement of a bipartite entangled state can be improved effectively by the local PT-symmetric operation and verify that the protection effect is better with the increase of PT-symmetric operation strength.

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Section: Introductionmentioning

confidence: 99%

Enhancing the nonlocal advantage of quantum coherence by local parity-time (PT)-symmetric operation

Wang

Sun

et al. 2019

Laser Phys. Lett.

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A layered quantum communication path protocol cross multiple participants based on entanglement swapping

2019

Quantum Inf Process

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Generating k EPR-pairs from an n-party resource state

Bravyi,

Sharma,

Szegedy

et al. 2024

Quantum

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Motivated by quantum network applications over classical channels, we initiate the study of n-party resource states from which LOCC protocols can create EPR-pairs between any k disjoint pairs of parties. We give constructions of such states where k is not too far from the optimal n/2 while the individual parties need to hold only a constant number of qubits. In the special case when each party holds only one qubit, we describe a family of n-qubit states with k proportional to log⁡n based on Reed-Muller codes, as well as small numerically found examples for k=2 and k=3. We also prove some lower bounds, for example showing that if k=n/2 then the parties must have at least Ω(log⁡log⁡n) qubits each.

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Quantum coordinated multi-point communication based on entanglement swapping

Cited by 3 publications

References 12 publications

Enhancing the nonlocal advantage of quantum coherence by local parity-time (PT)-symmetric operation

Enhancing the nonlocal advantage of quantum coherence by local parity-time (PT)-symmetric operation

A layered quantum communication path protocol cross multiple participants based on entanglement swapping

Generating k EPR-pairs from an n-party resource state

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