Managing continuous variables for single photons
(2005) 360-370
Abstract:
Photons have a rich structure associated with their continuous degrees of freedom, the transverse wavevector and frequency. This modal structure can play an important role in quantum information processing based on photons. In particular, information may be coded into any of the degrees of freedom, and this means that photons may represent not only qubits, but also qudits, or qunats - where the continuous degrees of freedom are involved. Coding into quantum correlations in these degrees may be usefully employed to transmit more than one bit per photon in a secure communications link. However, it may also be detrimental: for example, it can hinder the preparation of pure states via conditional detection, and, thus compromise the efficacy of quantum information processing schemes based on interference. We illustrate some general criteria that are useful for source design for QIP.Pure-state single-photon wave-packet generation by parametric down-conversion in a distributed microcavity - art. no. 023825
PHYSICAL REVIEW A 72:2 (2005) ARTN 023825
Self-Referencing, Spectrally, or Spatially Encoded Spectral Interferometry for the Complete Characterization of Attosecond Electromagnetic Pulses
Physical Review Letters 94 (2005) 033905 5pp
Efficient Conditional Preparation of High-Fidelity Single Photon States for Fiber-Optic Quantum Networks
Physical Review Letters 93 (2004) 093601 4pp