期刊
PHYSICAL REVIEW A
卷 78, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.78.060302
关键词
photonic band gap; quantum computing; quantum entanglement; spontaneous emission
资金
- MIUR [II04C0E3F3, II04C1AF4E]
- Academy of Finland [108699, 115682]
- Magnus Ehrnrooth Foundation
- Vaisala Foundation
- Academy of Finland (AKA) [108699, 108699] Funding Source: Academy of Finland (AKA)
We highlight the direct link between the time-dependent entanglement and single-qubit excited-state population for two independent qubits, each coupled to a zero-temperature bosonic environment. We show that, in environments structured so as to inhibit spontaneous emission, entanglement trapping and thus prevention of entanglement sudden death occur. We explicitly show that, for photonic band-gap materials as environment, high values of entanglement trapping can be achieved. We finally discuss how, under these conditions, coherent quantum operations can be implemented.
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