Kunihiro Kojima, Akihisa Tomita
Published 2007-02-14Version 1
A simple and efficient quantum non-demolition measurement (QND) scheme is proposed in which the arrival of a signal photon is detected without affecting the qubit state. The proposed QND scheme functions even if the ancillary photon is replaced with weak light composed of vacuum and one-photon states. Although the detection scheme is designed for entanglement sharing applications, it is also suitable for general purification of a single photon state.
Comments: 12pages, 4figures, Submitted to Phys. Rev. A
Journal: Phys. Rev. A 75, 032320 (2007)
Dissipative time crystal in an atom-cavity system: Influence of trap and competing interactions
Continuous variable teleportation of single photon states (Proceedings version)
Input-output Analysis of Quantum Finite-level Systems in Response to Single Photon States
