Decoherence-free manipulation of photonic memories for quantum computation

Details Decoherence-free manipulation of photonic memories for quantum computation Decoherence-free manipulation of photonic memories for quantum computation

2005-12-12

arxiv.org/abs/quant-ph/0512084v1

Phys. Rev. A 73, 022304 (2006)

Physics

Quantum Physics

5 pages, 4 figures, submitted to Phys. Rev

Scientific paper

10.1103/PhysRevA.73.022304

We present a protocol to construct an arbitrary quantum circuit. The quantum bits (qubits) are encoded in polarisation states of single photons. They are stored in spatially separated dense media deposed in an optical cavity. Specific sequences of pulses address individually the storage media to encode the qubits and to implement a universal set of gates. The proposed protocol is decoherence-free in the sense that spontaneous emission and cavity damping are avoided. We discuss a coupling scheme for experimental implementation in Neon atoms.

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