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Abstract:
Noise plays a troublesome role for entanglement generation, because the polarization entanglement of photons can be easily disturbed by the noise. In this paper, we propose a protocol to prepare Greenberger-Horne-Zeilinger state and W state of atoms in quantum nodes connected by collective-noise channels assisted by quantum nondemolition detectors (QNDs) and the controlled phase flip gates. The frequency degrees of freedom are exploited in our protocol. The successful probability of our protocol can reach 100% neglecting the photon loss and assuming that the efficiency of QNDs is 1. Moreover, the number of times of using QNDs is limited, and this makes the protocol quite effective when collective noise is small.
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JOURNAL OF MODERN OPTICS
ISSN: 0950-0340
Year: 2015
Issue: 6
Volume: 62
Page: 449-462
1 . 2 6 7
JCR@2015
1 . 2 0 0
JCR@2023
ESI Discipline: PHYSICS;
ESI HC Threshold:200
JCR Journal Grade:3
CAS Journal Grade:4
Cited Count:
WoS CC Cited Count: 3
SCOPUS Cited Count: 3
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 0
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