Shortcuts to adiabatic passage for multiqubit controlled-phase gate
Abstract
We propose an alternative scheme of shortcuts to a quantum controlled phase gate in a much shorter time based on the approach of Lewis-Riesenfeld invariants in cavity quantum electrodynamics systems. This scheme can be used to perform a one-qubit phase gate, a two-qubit controlled phase gate, as well as a multiqubit controlled phase gate. The strict numerical simulations demonstrate that the total operation time for implementing controlled phase gates is much shorter than previous schemes and very robust against decoherence.
- Publication:
-
Physical Review A
- Pub Date:
- March 2015
- DOI:
- 10.1103/PhysRevA.91.032304
- arXiv:
- arXiv:1411.7434
- Bibcode:
- 2015PhRvA..91c2304L
- Keywords:
-
- 03.67.Lx;
- 42.50.Pq;
- Quantum computation;
- Cavity quantum electrodynamics;
- micromasers;
- Quantum Physics
- E-Print:
- Physical Review A 91, 032304 (2015)