Phys. Rev. A 65, 010101(R) (2001) [4 pages]

Engineering quantum dynamics

Abstract

References

Citing Articles (44)

Download: PDF (62 kB) Buy this article Export: BibTeX or EndNote (RIS)

Seth Lloyd^* and Lorenza Viola^†
d’Arbeloff Laboratory for Information Systems and Technology, Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139

Received 25 August 2000; published 10 December 2001

The ability to perform measurements on a quantum system, combined with the ability to feed back the measurement results via coherent control, allows one to control the system to follow any desired coherent or incoherent quantum dynamics. Such universal dynamical control can be achieved, in principle, through the repeated application of only two coherent control operations and a simple “Yes-No” measurement. As a consequence, a quantum computer can simulate an arbitrary open-system dynamics using just one qubit more than required to simulate closed-system dynamics.

URL:

http://link.aps.org/doi/10.1103/PhysRevA.65.010101

DOI:

10.1103/PhysRevA.65.010101

PACS:

03.65.Ta, 05.30.-d, 05.45.Gg, 89.70.+c

^*Electronic address: slloyd@mit.edu

^†Present address: Los Alamos National Laboratory, MS B256, Los Alamos, NM 87545. Electronic address: lviola@lanl.gov

About | Terms and Conditions | Subscriptions | Search | Help

Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.

Citation Search:

Phys. Rev. A 65, 010101(R) (2001) [4 pages]

Engineering quantum dynamics