Demonstration of Feed-Forward Control for Linear Optics Quantum Computation

Details Demonstration of Feed-Forward Control for Linear Optics Quantum Computation Demonstration of Feed-Forward Control for Linear Optics Quantum Computation

2002-04-24

arxiv.org/abs/quant-ph/0204142v1

Phys. Rev. A 66, 052305 (2002).

Physics

Quantum Physics

Scientific paper

10.1103/PhysRevA.66.052305

One of the main requirements in linear optics quantum computing is the ability to perform single-qubit operations that are controlled by classical information fed forward from the output of single photon detectors. These operations correspond to pre-determined combinations of phase corrections and bit-flips that are applied to the post-selected output modes of non-deterministic quantum logic devices. Corrections of this kind are required in order to obtain the correct logical output for certain detection events, and their use can increase the overall success probability of the devices. In this paper, we report on the experimental demonstration of the use of this type of feed-forward system to increase the probability of success of a simple non-deterministic quantum logic operation from approximately 1/4 to 1/2. This logic operation involves the use of one target qubit and one ancilla qubit which, in this experiment, are derived from a parametric down-conversion photon pair. Classical information describing the detection of the ancilla photon is fed-forward in real-time and used to alter the quantum state of the output photon. A fiber optic delay line is used to store the output photon until a polarization-dependent phase shift can be applied using a high speed Pockels cell.

Affiliated with

Also associated with

No associations

Rating

Demonstration of Feed-Forward Control for Linear Optics Quantum Computation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Demonstration of Feed-Forward Control for Linear Optics Quantum Computation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Demonstration of Feed-Forward Control for Linear Optics Quantum Computation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1372