Journal
CANADIAN JOURNAL OF PHYSICS
Volume 86, Issue 4, Pages 549-555Publisher
CANADIAN SCIENCE PUBLISHING
DOI: 10.1139/P08-004
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We first devise a scheme to perform a universal entangling gate via controlled collisions between pairs of atomic qubits trapped with optical tweezers. Second, we present a modification to this scheme to allow for the preparation of atomic Bell pairs via selective excitation, suitable for quantum-information-processing applications that do not require universality. Both these schemes are enabled by the inherent symmetries of identical composite particles, as originally proposed by Hayes et al. Our scheme provides a technique for producing weighted graph states, entangled resources for quantum communication, and a promising approach to performing a loophole free Bell test in a single laboratory.
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