Efficient preparation of entangled states in cavity QED with Grover's algorithm

2025/01/31 by Nagib, Omar, Saffman, M., Mølmer, K. · 2 citations
#Atomic Physics (physics.atom-ph) #FOS: Physical sciences #Quantum Physics (quant-ph)

paper · doi:10.48550/arxiv.2501.18881

Abstract

We propose to employ the amplification mechanism of Grover's search algorithm to efficiently prepare entangled states of an ensemble of qubits. The conditional change of sign employed in the algorithm can be implemented by the phase shift of photons scattered on an optical cavity hosting an atomic ensemble. We show that collective Dicke states, GHZ states, and Schrödinger cat superpositions of N atoms may be prepared deterministically by few (∼ N^1/4) photon scattering events without individual addressing of the atoms.

Cited by

• Universal quantum control over Majorana zero modes
• Demonstration of measurement-free universal fault-tolerant quantum computation

Related

• Deterministic carving of quantum states with Grover's algorithm
• Implementation of many-qubit Grover search by cavity QED
• Efficient scheme for atomic entangled states with cavity QED system
• Efficient and high-fidelity entanglement in cavity QED without high cooperativity
• Scheme for preparation of W state via cavity QED