A quantum network of clocks


Lukin, M. (2014). A quantum network of clocks. Perimeter Institute. https://pirsa.org/14060021


Lukin, Mikhail. A quantum network of clocks. Perimeter Institute, Jun. 17, 2014, https://pirsa.org/14060021


          @misc{ pirsa_PIRSA:14060021,
            doi = {10.48660/14060021},
            url = {https://pirsa.org/14060021},
            author = {Lukin, Mikhail},
            keywords = {},
            language = {en},
            title = {A quantum network of clocks},
            publisher = {Perimeter Institute},
            year = {2014},
            month = {jun},
            note = {PIRSA:14060021 see, \url{https://pirsa.org}}

Mikhail Lukin Harvard University


By combining precision metrology and quantum networks, we describe a quantum, cooperative protocol for the operation of a network consisting of geographically remote optical atomic clocks. Using non-local entangled states, we demonstrate an optimal utilization of the global network resources, and show that such a network can be operated near the fundamental limit set by quantum theory yielding an ultra-precise clock signal. Besides serving as a real-time clock for the international time scale, the proposed quantum network also represents a large-scale quantum sensor that can be used to probe the fundamen- tal laws of physics, including relativity and connections between space-time and quantum physics. Prospects for realization of such networks will be discussed.