Journal
APPLIED PHYSICS LETTERS
Volume 101, Issue 19, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4767133
Keywords
light coherence; multiwave mixing; optical feedback; optical logic; rubidium
Categories
Funding
- National Basic Research Program of China (973 Program) [2011CB921604]
- National Natural Science Foundation of China [11234003, 10974057, 11004058, 11274118, J1030309]
- Shanghai Pujiang Program [09PJ1404400]
- Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning
- Program for New Century Excellent Talents in University [NCET-10-0383]
- Shanghai Municipal Education Commission
- Shanghai Education Development Foundation [11SG26]
- Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry
- National Research Council Research Associateship Award at NIST
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We experimentally demonstrate optical logic or and nor gates via coherent feedback. Based on a four-wave mixing process in hot rubidium vapor, two feedback beams are capable of fulfilling an optical nor gate for the feedback-suppressed state and an optical or gate for the feedback-boosted state simultaneously. The logic gates exhibit transition times faster than previously demonstrated in rubidium vapor. Coherent photon conversion between the two logic states, due to the atomic coherence, is observed in the coherent feedback process. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4767133]
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