Distributed Quantum Computation Based-on Small Quantum Registers

Details Distributed Quantum Computation Based-on Small Quantum Registers Distributed Quantum Computation Based-on Small Quantum Registers

2007-09-28

arxiv.org/abs/0709.4539v2

Phys. Rev. A 76, 062323 (2007)

Physics

Quantum Physics

22 Pages, 23 Figures and 1 Table (updated references)

Scientific paper

10.1103/PhysRevA.76.062323

We describe and analyze an efficient register-based hybrid quantum computation scheme. Our scheme is based on probabilistic, heralded optical connection among local five-qubit quantum registers. We assume high fidelity local unitary operations within each register, but the error probability for initialization, measurement, and entanglement generation can be very high (~5%). We demonstrate that with a reasonable time overhead our scheme can achieve deterministic non-local coupling gates between arbitrary two registers with very high fidelity, limited only by the imperfections from the local unitary operation. We estimate the clock cycle and the effective error probability for implementation of quantum registers with ion-traps or nitrogen-vacancy (NV) centers. Our new scheme capitalizes on a new efficient two-level pumping scheme that in principle can create Bell pairs with arbitrarily high fidelity. We introduce a Markov chain model to study the stochastic process of entanglement pumping and map it to a deterministic process. Finally we discuss requirements for achieving fault-tolerant operation with our register-based hybrid scheme, and also present an alternative approach to fault-tolerant preparation of GHZ states.

Affiliated with

Also associated with

No associations

Rating

Distributed Quantum Computation Based-on Small Quantum Registers 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 Distributed Quantum Computation Based-on Small Quantum Registers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Distributed Quantum Computation Based-on Small Quantum Registers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-714772