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Quantum-information encoding in dressed qubits

Title data

Machnikowski, Paweł ; Axt, Vollrath M. ; Kuhn, Tilmann:
Quantum-information encoding in dressed qubits.
In: Physical Review A. Vol. 75 (2007) Issue 5 . - No. 052330, 10 Seiten.
ISSN 0556-2791
DOI: https://doi.org/10.1103/PhysRevA.75.052330

Project information

Project financing: Alexander von Humboldt-Stiftung
Polish MNiSW (Grants No. PBZ-MIN-008/P03/2003 and No. 1 P03B 09826)

Abstract in another language

It is shown that quantum information stored in a two-level system coupled to a super-Ohmic bosonic bath is coherently distributed between the system and the environment. A different two-level subsystem, including a proper coherent state of the environment, satisfies all control, reset, and measurement conditions required for a qubit, including two-qubit conditional gates. Such a dressed qubit is decoupled from the remaining environmental degrees of freedom but its control imposes specific adiabaticity conditions. The dressed qubit is the actual physical medium in which quantum information is encoded whenever control operations are slower than the environment dynamics.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: dressed qubits; quantum information theory; quantum dots; super Ohmic-environment; bosonic environment
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Theoretical Physics III > Chair Theoretical Physics III - Univ.-Prof. Dr. Martin Axt
Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Theoretical Physics III
Result of work at the UBT: No
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 25 Oct 2017 08:29
Last Modified: 30 Oct 2017 09:53
URI: https://eref.uni-bayreuth.de/id/eprint/40167