Selective acoustic control of photon-mediated qubit-qubit interactions

Journal Article · Thu May 28 00:00:00 EDT 2020 · Physical Review A

DOI:https://doi.org/10.1103/physreva.101.052342· OSTI ID:1803590

Neuman, Tomáš ^[1]; Trusheim, Matthew ^[2]; Narang, Prineha ^[2]

---

1. Harvard Univ., Cambridge, MA (United States); OSTI
2. Harvard Univ., Cambridge, MA (United States)

Quantum technologies such as quantum sensing, quantum imaging, quantum communications, and quantum computing rely on the ability to actively manipulate the quantum state of light and matter. Quantum emitters, such as color centers trapped in solids, are a useful platform for the realization of elementary building blocks (qubits) of quantum information systems. In particular, the modular nature of such solid-state devices opens up the possibility to connect them into quantum networks and create nonclassical states of light shared among many qubits. The function of a quantum network relies on efficient and controllable interactions among individual qubits. In this context, we present a scheme where optically active qubits of differing excitation energies are mutually coupled via a dispersive interaction with a shared mode of an optical cavity. This generally off-resonant interaction is prohibitive of direct exchange of information among the qubits. However, we propose a scheme in which by acoustically modulating the qubit excitation energies it is, in fact, possible to tune to resonance a preselected pair of qubits and thus open a communication channel between them. This method potentially enables fast (approximately nanoseconds) and parallelizable on-demand control of a large number of physical qubits. In this work, we develop an analytical and a numerical theoretical model demonstrating this principle and suggest feasible experimental scenarios to test the theoretical predictions.

• Research Organization: Energy Frontier Research Centers (EFRC) (United States). Photonics at Thermodynamic Limits; Stanford Univ., CA (United States)
• Sponsoring Organization: Gordon and Betty Moore Foundation; USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
• Grant/Contract Number: SC0019140
• OSTI ID: 1803590
• Journal Information: Physical Review A, Journal Name: Physical Review A Journal Issue: 5 Vol. 101; ISSN 2469-9926
• Publisher: American Physical Society (APS)
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
Optics
Physics