Quantum Hyperdense Coding

Graham, Trent; Zeitler, Christopher K.; Kwiat, Paul G.

doi:10.1364/fio.2015.fth3d.4

Cited by 2 publications

(1 citation statement)

References 8 publications

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“…Many hyperentangled Bell state analysis (HBSA) schemes have been proposed to discriminate the hyperentangled Bell states, which show that the hyperentangled Bell states are difficult to be determinately discriminated using linear optics. [49,[58][59][60] Assisted by the auxiliary momentum entanglement and time-bin DOF, the polarization-momentum hyperentangled Bell states can be discriminated determinately with linear optics, [61] and the complete polarization-momentum HBSA can also be implemented using auxiliary hyperentanglement. [62] However, the applications of HBSA will be limited by using auxiliary entanglement of other DOFs of photon system.…”

Section: Introductionmentioning

confidence: 99%

Deterministic nondestructive state analysis for polarization-spatial-time-bin hyperentanglement with cross-Kerr nonlinearity*

Zhang

Wang

et al. 2021

Chinese Phys. B

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We present a deterministic nondestructive hyperentangled Bell state analysis protocol for photons entangled in three degrees of freedom (DOFs), including polarization, spatial-mode, and time-bin DOFs. The polarization Bell state analyzer and spatial-mode Bell state analyzer are constructed by polarization parity-check quantum nondemolition detector (P-QND) and spatial-mode parity-check quantum nondemolition detector (S-QND) using cross-Kerr nonlinearity, respectively. The time-bin Bell state analyzer is constructed by the swap gate for polarization state and time-bin state of a photon (P-T swap gate) and P-QND. The Bell states analyzer for one DOF will not destruct the Bell states of other two DOFs, so the polarization-spatial-time-bin hyperentangled Bell states can be determinately distinguished without destruction. This deterministic nondestructive state analysis method has useful applications in quantum information protocols.

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Section: Introductionmentioning

confidence: 99%

Deterministic nondestructive state analysis for polarization-spatial-time-bin hyperentanglement with cross-Kerr nonlinearity*

Zhang

Wang

et al. 2021

Chinese Phys. B

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Linear-optical four-dimensional Bell state measurement for superdense coding assisted by polarization entanglement

Zeng

2024

J. Opt. Soc. Am. B

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With the assistance of auxiliary two-dimensional polarization entanglement, we theoretically present an efficient Bell state measurement (BSM) method for photonic four-dimensional entanglement in the path degree of freedom, in which just simple linear optical elements and common single-photon detectors are utilized. With this approach, the 16 mutually orthogonal four-dimensional path Bell states can be classified into eight distinguishable groups, which allows the transmission of 3 bits of classical information by just sending one photon in our quantum superdense coding protocol. Compared with previous quantum dense coding protocols that are also based on linear-optical BSM, our protocol has certain advantages and will be useful for other quantum communication protocols based on high-dimensional entanglement.

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Quantum Hyperdense Coding

Cited by 2 publications

References 8 publications

Deterministic nondestructive state analysis for polarization-spatial-time-bin hyperentanglement with cross-Kerr nonlinearity*

Deterministic nondestructive state analysis for polarization-spatial-time-bin hyperentanglement with cross-Kerr nonlinearity*

Linear-optical four-dimensional Bell state measurement for superdense coding assisted by polarization entanglement

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