Quantum gates using a pulsed bias scheme
- Department of Electrical Engineering, Campus Box 44, Wichita State University, Wichita, Kansas 67260 (United States)
- Department of Physics, Campus Box 32, Wichita State University, Wichita, Kansas 67260 (United States)
- Department of Aerospace Engineering, Campus Box 44, Wichita State University, Wichita, Kansas 67260 (United States)
- Department of Chemistry, University of Kansas, Lawrence, Kansas 66045 (United States)
- Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045 (United States)
We propose a scheme for realizing quantum gates [controlled-NOT (CNOT) and Toffoli] using a two-level quantum system by means of a pulsed bias. We show how to realize a CNOT gate using a two-qubit, two-level coupled system and a Toffoli gate using a three-qubit, two-level coupled system. For the CNOT gate, we show how to reduce the 4x4 Hamiltonian of the coupled system to a 2x2 Hamiltonian in order to solve for parameter values of the system. When these values are substituted into the coupled system equations for the two-qubit system, the simulation results confirm the CNOT gate operation. We further demonstrate our proposed scheme for a CNOT gate operation using a multilevel system of two coupled superconducting quantum interference devices as a particular example. We next use the same approach to implement a Toffoli gate using a three-qubit system.
- OSTI ID:
- 20718704
- Journal Information:
- Physical Review. A, Journal Name: Physical Review. A Journal Issue: 4 Vol. 72; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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