On-chip generation of high-dimensional entangled quantum states and their coherent control

On-chip generation of high-dimensional entangled quantum states and their coherent control

29-06-2017 | Michael Kues, Christian Reimer, Piotr Roztocki, Luis Romero Corts, Stefania Sciara, Benjamin Wetzel, Yanbing Zhang, Alfonso Cino, Sai T Chu, Brent E Little, David J Moss, Lucia Caspani, José Azaña, Roberto Morandotti
This paper presents a method for generating and controlling high-dimensional entangled quantum states on-chip. The authors demonstrate the creation of a quantum system with at least 100 dimensions, formed by two entangled qudits with \(D = 10\). They achieve this by using spontaneous four-wave mixing in an integrated nonlinear microring resonator, where photons are created in a coherent superposition of multiple frequency modes. The frequency domain is exploited to generate and manipulate high-dimensional states, enabling flexible coherent control through the manipulation of their frequency components using telecommunications filters and RF photonics components. The authors validate their platform by measuring Bell inequality violations and performing quantum state tomography, showing good agreement between the measured and expected maximally entangled states. This work opens new avenues for quantum information processing and quantum communication, particularly in the context of high-dimensional quantum states and their practical implementation in integrated photonics.This paper presents a method for generating and controlling high-dimensional entangled quantum states on-chip. The authors demonstrate the creation of a quantum system with at least 100 dimensions, formed by two entangled qudits with \(D = 10\). They achieve this by using spontaneous four-wave mixing in an integrated nonlinear microring resonator, where photons are created in a coherent superposition of multiple frequency modes. The frequency domain is exploited to generate and manipulate high-dimensional states, enabling flexible coherent control through the manipulation of their frequency components using telecommunications filters and RF photonics components. The authors validate their platform by measuring Bell inequality violations and performing quantum state tomography, showing good agreement between the measured and expected maximally entangled states. This work opens new avenues for quantum information processing and quantum communication, particularly in the context of high-dimensional quantum states and their practical implementation in integrated photonics.
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[slides and audio] On-chip generation of high-dimensional entangled quantum states and their coherent control