Observation of Photon Blockade in a Tavis-Cummings System

2025/01/30 by Brian Marinelli, Alex H. Rubin, Marinelli, Brian +23 · 1 voice · 1 citation
#quant-ph

paper · pdf · doi:10.48550/arxiv.2501.18751

Abstract

We observe blockade of microwave photons in a Tavis-Cummings system comprising a superconducting cavity and up to N=3 transmon qubits. The effect is characterized with photon number-resolving spectroscopy using an additional dispersively coupled transmon "witness" qubit to directly probe the cavity's photon number distribution. We first observe polariton formation with splitting proportional to √(N), confirming the Tavis-Cummings coupling, and subsequently obtain sub-Poissonian cavity photon statistics when the cavity is driven at polariton frequencies.

Cited by

• Quantum statistics of single-mode radiation emitted by superradiant Dicke states

Discussions

• 🚨 #Rlab preprint alert 🥁🥁🥁 We have observed photon blockade in a cavity with multiple emitters i.e. a Tavis-Cummings system! Collaboration with Berkeley Lab Advanced Quantum Testbed and MIT Linc [bsky, 6 points, 0 comments]

Related

• Cavity linewidth narrowing with dark-state polaritons
• Non-classical effects in polariton trion
• Exploring higher Jaynes-Cummings doublet in cavity quantum electrodynamics system with a broadband squeezed vacuum injection
• Onset of transmon ionization in microwave single-photon detection
• Non-classical photon statistics in frequency-modulated double quantum dot cavity systems