10.1103-PhysRevA.95.042309.pdf (90.02 kB)
Transformation properties and entanglement of relativistic qubits under space-time and gauge transformations
Version 2 2023-06-12, 08:40
Version 1 2023-06-09, 05:32
journal contribution
posted on 2023-06-12, 08:40 authored by Xavier CalmetXavier Calmet, Jacob DunninghamJacob DunninghamWe revisit the properties of qubits under Lorentz transformations and, by considering Lorentz invariant quantum states in the Heisenberg formulation, clarify some misleading notation that has appeared in the literature on relativistic quantum information theory. We then use this formulation to consider the transformation properties of qubits and density matrices under space-time and gauge transformations. Finally we use our results to understand the behaviour of entanglement between different partitions of quantum systems. Our approach not only clarifies the notation, but provides a more intuitive and simple way of gaining insight into the behaviour of relativistic qubits. In particular, it allows us to greatly generalize the results in the current literature as well as substantially simplifying the calculations that are needed.
Funding
Theoretical Particle Physics Consortium Sussex - Royal Holloway; G1449; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/L000504/1
History
Publication status
- Published
File Version
- Published version
Journal
Physical Review AISSN
1050-2947Publisher
American Physical SocietyExternal DOI
Issue
4Volume
95Page range
042309Department affiliated with
- Physics and Astronomy Publications
Research groups affiliated with
- Atomic, Molecular and Optical Physics Research Group Publications
- Mathematical Physics Group Publications
- Sussex Centre for Quantum Technologies Publications
- Theoretical Particle Physics Research Group Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2017-03-24First Open Access (FOA) Date
2017-03-24First Compliant Deposit (FCD) Date
2017-03-24Usage metrics
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