Experimental demonstration of an efficient, semi-device-independent photonic indistinguishability witness
Reinier van der Meer, Peter Hooijschuur, Franciscus H.B. Somhorst, Pim, Venderbosch, Michiel de Goede, Ben Kassenberg, Henk Snijders, Caterina, Taballione, Jorn Epping, Hans van den Vlekkert, Nathan Walk, Pepijn W.H., Pinkse, and Jelmer J. Renema
TL;DR
This paper presents a semi-device-independent method to reliably measure photonic indistinguishability, verified on an integrated photonic processor, enhancing trustworthiness in quantum photonics experiments.
Contribution
It introduces a new semi-device-independent indistinguishability witness and demonstrates its effectiveness on an integrated photonic platform.
Findings
Certifies three-photon indistinguishability reliably
Insensitivity to implementation errors demonstrated
Advances secure measurement in quantum photonics
Abstract
Efficient and reliable measurements of photonic indistinguishability are crucial to solidify claims of a quantum advantage in photonics. Existing indistinguishability witnesses may be vulnerable to implementation loopholes, showing the need for a measurement which depends on as few assumptions as possible. Here, we introduce a semi-device-independent witness of photonic indistinguishability and measure it on an integrated photonic processor, certifying three-photon indistinguishability in a way that is insensitive to implementation errors in our processor.
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Taxonomy
TopicsNeural Networks and Reservoir Computing · Photonic and Optical Devices · Optical Network Technologies