Input states for quantum gates
arXiv:quant-ph/0301112 · doi:10.1103/PhysRevA.67.040304
Abstract
We examine three possible implementations of non-deterministic linear optical cnot gates with a view to an in-principle demonstration in the near future. To this end we consider demonstrating the gates using currently available sources such as spontaneous parametric down conversion and coherent states, and current detectors only able to distinguish between zero or many photons. The demonstration is possible in the co-incidence basis and the errors introduced by the non-optimal input states and detectors are analysed.
References in corpus (8)
- Ultra-bright source of polarization-entangled photons
- Non-maximally entangled states: production, characterization and utilization
- Probabilistic Quantum Logic Operations Using Polarizing Beam Splitters
- Linear Optical CNOT Gate in the Coincidence Basis
- Simple Scheme for Efficient Linear Optics Quantum Gates
- Quantum phase gate for photonic qubits using only beam splitters and post-selection
- High efficiency photon counting using stopped light
- Atomic vapor-based high efficiency optical detectors with photon number resolution