Phase-locked indistinguishable photons with synthesized waveforms from a solid-state source

Abstract

Resonance fluorescence in the Heitler regime provides access to single photons with coherence well beyond the Fourier transform limit of the transition, and holds the promise to circumvent environment-induced dephasing common to all solid-state systems. Here we demonstrate that the coherently generated single photons from a single self-assembled InAs quantum dot display mutual coherence with the excitation laser on a timescale exceeding 3 seconds. Exploiting this degree of mutual coherence we synthesize near-arbitrary coherent photon waveforms by shaping the excitation laser field. In contrast to post-emission filtering, our technique avoids both photon loss and degradation of the single photon nature for all synthesized waveforms. By engineering pulsed waveforms of single photons, we further demonstrate that separate photons generated coherently by the same laser field are fundamentally indistinguishable, lending themselves to creation of distant entanglement through quantum interference.

Additional data and analysis in PDF format is available for download at the publications section of our website: http://www.amop.phy.cam.ac.uk/amop-ma/

References in corpus (9)

• The Quantum Internet
• Photonic quantum technologies
• Resonance fluorescence from a coherently driven semiconductor quantum dot in a cavity
• Interference of Single Photons from Two Separate Semiconductor Quantum Dots
• Electro-Optic Modulation of Single Photons
• Shaping the Phase of a Single Photon
• Probabilistic Quantum Gates between Remote Atoms through Interference of Optical Frequency Qubits
• Resonant excitonic emission of a single quantum dot in the Rabi regime
• Sub-nanosecond Electro-optic Modulation of Triggered Single Photons from a Quantum Dot