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- Title
Effective deterministic joint remote preparation of the Knill–Laflamme–Milburn state in collective noise environment.
- Authors
Hou, Kui; Chen, Zun-Yi; Shi, Min; Zhang, Xue-Yong
- Abstract
We present a scheme for implementing deterministic joint remote preparation of the Knill–Laflamme–Milburn state with two GHZ states as the quantum channel. Assuming that four of the six involved qubits collectively suffer the same type of noise, we first investigate the effects of four typical types of noises on the protocol by means of Kraus operators. It is shown that the bit-flip and amplitude damping noise are the severe noises for decoherence rate χ < 0.5 , followed by the depolarizing and phase-flip channel, respectively. Interestingly, the efficiency of the scheme can be restored by adding decoherence when χ > 0.5 in bit-flip and phase-flip noise channel. Afterward, we investigate the dynamics of deterministic joint remote state preparation for dissipative environments. Analytical and numerical calculations show that the quality of our scheme can be enhanced by adjusting the system detuning no matter whether the non-Markovian effect is applicable or not.
- Subjects
NOISE; QUANTUM states; NUMERICAL calculations; QUBITS
- Publication
Quantum Information Processing, 2021, Vol 20, Issue 7, p1
- ISSN
1570-0755
- Publication type
Article
- DOI
10.1007/s11128-021-03163-4