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標題:Mode Dependency of Quantum Decoherence Studied via an Aharonov-Bohm Interferometer
學年104
學期2
出版(發表)日期2016/02/24
作品名稱Mode Dependency of Quantum Decoherence Studied via an Aharonov-Bohm Interferometer
作品名稱(其他語言)
著者Tung-Sheng Lo; Yiping Lin; Phillip M. Wu; Dah-Chin Ling; C. C. Chi; Jeng-Chung Chen
單位
出版者
著錄名稱、卷期、頁數Physical Review Letters 116(8), pp.080401
摘要We investigate the dependence of decoherence on the mode number M in a multiple-mode Aharonov-
Bohm (AB) interferometer. The design of the AB interferometer allows us to precisely determine M by the
additivity rule of ballistic conductors; meanwhile, the decoherence rate is simultaneously deduced by the
variance of the AB oscillation amplitude. The AB amplitude decreases and fluctuates with depopulating
M. Moreover, the normalized amplitude exhibits a maximum at a specific M (∼9). Data analysis reveals
that the charge-fluctuation-induced dephasing, which depends on the geometry and the charge relaxation
resistance of the system, could play an essential role in the decoherence process. Our results suggest that the
phase coherence, in principle, can be optimized using a deliberated design and pave one of the ways toward
the engineering of quantum coherence.
關鍵字ballistic one-dimensional transport;Aharonov-Bohm interferometer;quantum coherence
語言英文(美國)
ISSN1079-7114;0031-9007
期刊性質國外
收錄於SCI;
產學合作
通訊作者J.C. Chen
審稿制度
國別美國
公開徵稿
出版型式,電子版,紙本
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