Quantum State Transfer and Hadamard Gate for Coherent States

Prudencio, Thiago

doi:10.1142/s021974991350024x

Cited by 2 publications

(2 citation statements)

References 43 publications

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“…As in the original proposal of quantum teleportation [2], the ideal scenario is free from the problems that are sources of decoherence. The case of two thermal baths can be viewed as a qubit transfer from one system to another, as it is well done in the cases of light-matter quantum transfers [60,61]. The difference of temperature does not affect the orthogonality relations involved between the states.…”

Section: Quantum Teleportation At a Single Thermal Bathmentioning

confidence: 99%

Quantum teleporation of thermofields

Prudencio

Filho²,

Santana³

2019

Phys. Scr.

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Quantum teleportation of thermofields in the context of thermofield dynamics (TFD) at single and two thermal baths is proposed. We show using TFD that the non-local correlations associated to the quantum channel and temperature effects in each subsystem can be treated separately, allowing teleportation even if the systems A and B are considered at different temperatures. As a consequence, the temperature effect is treated locally in each subsystem, while the quantum correlation protocol is used for non-locality, allowing the systems A and B be separated at long distances at different temperatures for implementation of the protocol.

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Section: Quantum Teleportation At a Single Thermal Bathmentioning

confidence: 99%

Quantum teleporation of thermofields

Prudencio

Filho²,

Santana³

2019

Phys. Scr.

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“…The coefficients in (20) can be rearranged by the action of a Hadamard-type gate operation in the basis of coherent states [34],…”

Section: Tst and Coupling To High-q Cavity Devicementioning

confidence: 99%

Optical and spin-optical superpositions modulated by Aharonov–Bohm effect

Prudencio

2017

Int. J. Quantum Inform.

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Generation of Aharonov-Bohm (AB) phase has achieved a state-ofthe-art in mesoscopic systems with manipulation and control of the AB effect. The possibility of transfer information enconded in such systems to non-classical states of light increases the possible scenarios where the information can be manipulated and transfered. In this paper we propose a quantum transfer of the AB phase generated in a spintronic device, a topological spin transistor (TST), to an quantum optical device, a coherent state superposition in high-Q cavity and discuss optical and spinoptical superpositions in the presence of an AB phase. We demonstrate that the AB phase generated in the TST can be transfered to the coherent state superposition, considering the interaction with the spin state and the quantum optical manipulation of the coherent state superposition. We show that these cases provide examples of two-qubit states modulated by AB effect and that the phase parameter can be used to control the degree of rotation of the qubit state. We also show under a measurement on the spin basis, an optical one-qubit state that can be modulated by the AB effect. In these cases, we consider a dispesive interaction between a coherent state and a spin state with an acquired AB phase and also discuss a dissipative case where a given Lindblad equation is achieved and solved.

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Quantum State Transfer and Hadamard Gate for Coherent States

Cited by 2 publications

References 43 publications

Quantum teleporation of thermofields

Quantum teleporation of thermofields

Optical and spin-optical superpositions modulated by Aharonov–Bohm effect

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