PIRSA:16040107

The accuracy of finite quantum clocks: Fundamental constraints from dimension and thermodynamic considerations

Silva, R. (2016). The accuracy of finite quantum clocks: Fundamental constraints from dimension and thermodynamic considerations. Perimeter Institute. https://pirsa.org/16040107

Silva, Ralph. The accuracy of finite quantum clocks: Fundamental constraints from dimension and thermodynamic considerations. Perimeter Institute, Apr. 27, 2016, https://pirsa.org/16040107 

          @misc{ pirsa_PIRSA:16040107,
            doi = {10.48660/16040107},
            url = {https://pirsa.org/16040107},
            author = {Silva, Ralph},
            keywords = {Quantum Information},
            language = {en},
            title = {The accuracy of finite quantum clocks: Fundamental constraints from dimension and thermodynamic considerations},
            publisher = {Perimeter Institute},
            year = {2016},
            month = {apr},
            note = {PIRSA:16040107 see, \url{https://pirsa.org}}
          }

Ralph Silva ETH Zurich

DOI 10.48660/16040107
Collection
Talk Type Scientific Series
Subject

Abstract

In this talk I will introduce recent research into quantum clocks of finite dimension, with the focus on their accuracy, as determined by their dimension, coherence, and power consumption.

I will present arguments to bound the synchronization time of any quantum clock as a function of its dimension. In addition, quantum coherence appears to be necessary to saturate these bounds, as the synchronization time of incoherent clocks is seen to have a worse bound. In addition, I will review simple proposals for autonomous clocks built out of thermal machines, and demonstrate that the power consumption of thermal clocks determines the limit of their accuracy. Finally, I will introduce an example of a finite quantum clock that is able to control any quantum operation up to a calculable accuracy, and discuss whether it represents a best case scenario for quantum clocks.