Experimental high-dimensional entanglement certification and quantum steering with time-energy measurements
- URL: http://arxiv.org/abs/2310.20694v2
- Date: Fri, 08 Nov 2024 21:25:38 GMT
- Title: Experimental high-dimensional entanglement certification and quantum steering with time-energy measurements
- Authors: Kai-Chi Chang, Murat Can Sarihan, Xiang Cheng, Paul Erker, Nicky Kai Hong Li, Andrew Mueller, Maria Spiropulu, Matthew D. Shaw, Boris Korzh, Marcus Huber, Chee Wei Wong,
- Abstract summary: High-dimensional entanglement provides unique ways of transcending the limitations of current approaches in quantum information processing.
We develop a new scheme and experimentally demonstrate the certification of 24-dimensional entanglement and a 9-dimensional quantum steering.
Our approach, leveraging intrinsic large-alphabet nature of telecom-band photons, enables scalable, commercially viable, and field-deployable entangled and steerable quantum sources.
- Score: 4.441222446978085
- License:
- Abstract: High-dimensional entanglement provides unique ways of transcending the limitations of current approaches in quantum information processing, quantum communications based on qubits. The generation of time-frequency qudit states offer significantly increased quantum capacities while keeping the number of photons constant, but pose significant challenges regarding the possible measurements for certification of entanglement. Here, we develop a new scheme and experimentally demonstrate the certification of 24-dimensional entanglement and a 9-dimensional quantum steering. We then subject our photon-pairs to dispersion conditions equivalent to the transmission through 600-km of fiber and still certify 21-dimensional entanglement. Furthermore, we use a steering inequality to prove 7-dimensional entanglement in a semi-device independent manner, proving that large chromatic dispersion is not an obstacle in distributing and certifying high-dimensional entanglement and quantum steering. Our approach, leveraging intrinsic large-alphabet nature of telecom-band photons, enables scalable, commercially viable, and field-deployable entangled and steerable quantum sources, providing a pathway towards fully scalable quantum information processer and high-dimensional quantum communication networks.
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