Revealing the quantum nature of memory in non-Markovian dynamics on IBM quantum
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
Abstract
We investigate memory effects in non-Markovian dynamics on superconducting quantum processors provided by IBM Quantum. We use a collision-model approach to implement suitable single- and two-qubit dynamics with a gate-based quantum circuit. Coupling the system of interest to an ancilla allows for a characterization of the process with respect to non-Markovian memory effects in general, as well as concerning the quantumness of that memory. We demonstrate that current noisy quantum hardware is capable of verifying quantum memory in single-qubit dynamics. We then discuss why a generalization of this dynamics to the two-qubit case cannot directly be simulated in a way that allows quantum memory to be observed. Nevertheless, we present an alternative toy example that demonstrates how quantum memory of two-qubit dynamics can be witnessed using current noisy quantum computers.
Details
| Original language | English |
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| Article number | 044512 |
| Number of pages | 14 |
| Journal | New journal of physics |
| Volume | 28 |
| Publication status | Published - 23 Apr 2026 |
| Peer-reviewed | Yes |
External IDs
| ORCID | /0000-0002-7806-3525/work/215835219 |
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Keywords
ASJC Scopus subject areas
Keywords
- cloud computing, non-Markovianity, Quantum dynamics, quantum memory