Local invariants of braiding quantum gates—associated link polynomials and entangling power
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Physics A: Mathematical and Theoretical"
DOI: 10.1088/1751-8121/abdfe9
Abstract: For a generic n-qubit system, local invariants under the action of SL(2,C)⊗n characterize non-local properties of entanglement. In general, such properties are not immediately apparent and hard to construct. Here we consider two-qubit Yang–Baxter operators… read more here.
Keywords: local invariants; associated link; braiding quantum; entangling power ... See more keywords
Entangling power, gate typicality, and measurement-induced phase transitions
Sign Up to like & getrecommendations! Published in 2024 at "Physical Review A"
DOI: 10.1103/physreva.110.062422
Abstract: When subject to a non-local unitary evolution, qubits in a quantum circuit become increasingly entangled. Conversely, measurements applied to individual qubits lead to their disentanglement from the collective system. The extent of entanglement reduction depends… read more here.
Keywords: circuit; entangling power; entanglement; gate ... See more keywords
Expressibility, entangling power, and quantum average causal effect for causally indefinite circuits
Sign Up to like & getrecommendations! Published in 2024 at "Physical Review A"
DOI: 10.1103/physreva.111.042620
Abstract: Parameterized quantum circuits are the core of new technologies such as variational quantum algorithms and quantum machine learning, which makes studying its properties a valuable task. We implement parameterized circuits with definite and indefinite causal… read more here.
Keywords: quantum average; expressibility; entangling power; average causal ... See more keywords
Impact of local dynamics on entangling power
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review A"
DOI: 10.1103/physreva.95.040302
Abstract: It is demonstrated here that local dynamics have the ability to strongly modify the entangling power of unitary quantum gates acting on a composite system. The scenario is common to numerous physical systems, in which… read more here.
Keywords: local dynamics; impact local; power; dynamics entangling ... See more keywords