Document Type
Article
Publication Date
7-3-2000
Abstract
Single-photon interferometry has been used to simulate quantum computations. Its use has been limited to studying few-bit applications due to rapid growth in physical size with numbers of bits. We propose a hybrid approach that employs n photons, each having L degrees of freedom yielding Ln basis states. The photons are entangled via a quantum nondemolition measurement. This approach introduces the essential element of quantum computing, that is, entanglement into the interferometry. Using these techniques, we demonstrate a controlled-NOT gate and a Grover's search circuit. These ideas are also applicable to the study of nonlocal correlations in many dimensions.
Recommended Citation
J. C. Howell and J. A. Yeazell, Quantum Computation Through Entangling Single Photons in Multipath Interferometers, Phys. Rev. Lett. 85(1), 198. https://doi.org/10.1103/PhysRevLett.85.198
Peer Reviewed
1
Copyright
American Physical Society
Comments
This article was originally published in Physical Review Letters, volume 85, issue 1, in 2000. https://doi.org/10.1103/PhysRevLett.85.198