Physics – Quantum Physics
Scientific paper
2001-10-18
Phys. Rev. A 65, 042301 (2002)
Physics
Quantum Physics
12 pages, 6 figures, REVTeX; references fixed
Scientific paper
10.1103/PhysRevA.65.042301
We describe a protocol for continuously protecting unknown quantum states from decoherence that incorporates design principles from both quantum error correction and quantum feedback control. Our protocol uses continuous measurements and Hamiltonian operations, which are weaker control tools than are typically assumed for quantum error correction. We develop a cost function appropriate for unknown quantum states and use it to optimize our state-estimate feedback. Using Monte Carlo simulations, we study our protocol for the three-qubit bit-flip code in detail and demonstrate that it can improve the fidelity of quantum states beyond what is achievable using quantum error correction when the time between quantum error correction cycles is limited.
Ahn Charlene
Doherty Andrew C.
Landahl Andrew J.
No associations
LandOfFree
Continuous quantum error correction via quantum feedback control does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Continuous quantum error correction via quantum feedback control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Continuous quantum error correction via quantum feedback control will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-283990