Linear optical controlled- NOT gate in the coincidence basis

By Timothy C. Ralph, N. Langford, Tb Bell, A. White. 2001

293 citations recorded by the source corpus.

We describe the operation and tolerances of a nondeterministic, coincidence basis, quantum controlled-NOT gate for photonic qubits. It is constructed solely from linear optical elements and requires only a two-photon source for its demonstration. Its success probability is 1/9.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/6ece5ada06c272cb1ecd47e4bfb369f260e5262d

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In Artificial Intelligence

In Atomic and Molecular Physics, and Optics

In Electrical and Electronic Engineering

Citations in the corpus

Large-scale silicon quantum photonics implementing arbitrary two-qubit processing (2018, background): “[9] Timothy C Ralph, Nathan K Langford, TB Bell, and AG White.”
Experimental quantum-enhanced estimation of a lossy phase shift (2009, background): “The limitations of the state preparation procedure, together with mode coupling and photon counting efficiencies mean that the measurements must be carried out in the coincidence basis [26].”
Multiphoton entanglement and interferometry (2008, background): “Various groups have been working on reducing the complexity of the scheme while improving its theoretical efficiency (Koashi et al., 2001; Pittman et al., 2001; Ralph et al., 2002a, 2002b).”
Linear optical quantum computing with photonic qubits (2005, methodology): “14 (O’Brien et al. 2003), which is an implementation of the gate proposed by Ralph et al. (2002a).”