4.6 Article

Non-Markovian quantum input-output networks

Journal

PHYSICAL REVIEW A
Volume 87, Issue 3, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.87.032117

Keywords

-

Funding

  1. National Natural Science Foundation of China [61174084, 61134008, 60904034, 10975080, 61025022]
  2. Open Project of State Key Laboratory of Robotics
  3. NSF [PHY-0902906, PHY-1005571]
  4. ARO MURI [W911NF-11-1-0268]
  5. ARO, JSPS-RFBR [12-02-92100]
  6. MEXT Kakenhi on Quantum Cybernetics
  7. JSPS
  8. Grants-in-Aid for Scientific Research [22224007, 21102002] Funding Source: KAKEN
  9. Direct For Mathematical & Physical Scien
  10. Division Of Physics [1005571] Funding Source: National Science Foundation

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Quantum input-output response analysis is a useful method for modeling the dynamics of complex quantum networks, such as those for communication or quantum control via cascade connections. Non-Markovian effects are expected to be important in networks realized using mesoscopic circuits, but such effects have not yet been studied. Here we extend the Markovian input-output network formalism to non-Markovian networks. The general formalism can be applied to various examples: (i) we show how non-Markovian coherent feedback can reduce the speed of decoherence for an atom in an optical cavity; (ii) we examine the effect of finite-cavity bandwidths in a superconducting circuit. DOI: 10.1103/PhysRevA.87.032117

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