Portal de Periódicos da CAPES

Deterministic Linear Optics Quantum Computation with Single Photon Qubits

2003; American Physical Society; Volume: 91; Issue: 3 Linguagem: Inglês

10.1103/physrevlett.91.037903

1092-0145

Nadav Yoran, Benni Reznik,

Quantum Computing Algorithms and Architecture

We suggest an efficient scheme for quantum computation with linear optical elements, where the qubits are encoded in single photon states. The scheme reduces the resources required per logical gate by several orders of magnitude, compared to an earlier proposal of Knill, Laflamme, and Milburn, while the resource overhead per gate is independent of the length of the computation. A central feature of the scheme, enabling these improvements, is the prior construction of a "linked" photon state designed according to the particular quantum circuit one wishes to process. Once this state has been successfully prepared, the computation is pursued deterministically by a sequence of teleportation steps.