Abstract
Among various approaches toward quantum computation, measurement-based quantum computation (MBQC) multiplexed in time domain is currently a promising method for addressing the need for scalability. MBQC requires two components: cluster states and programmable measurements. With time-domain multiplexing, the former has been realized on an ultra-large-scale. The latter, however, has remained unrealized, leaving the large-scale cluster states unused. In this work, we make such a measurement system and use it to demonstrate basic quantum operations multiplexed in the time domain with 25 MHz clock frequency. We verify transformations of the input states and their nonclassicalities for single-step quantum operations and also observe multi-step quantum operations up to one hundred steps.
Highlights
Quantum computation has many promising applications [1]
We demonstrate one-mode Gaussian operations multiplexed in the time domain with a clock frequency of 25 MHz
In addition to demonstrating the capability of timedomain-multiplexed cluster states to implement quantum operations in a scalable way, we formulate a method to evaluate the performance of our system using the existing quantum entanglement
Summary
To fully harness the power of the quantum computer, it is important to realize a large-scale quantum computer with universality and fault tolerance In this regard, an approach to quantum computation called “measurement-based quantum computation” (MBQC) is. We present a demonstration of one-mode Gaussian operations multiplexed in the time domain by changing the measurement basis dynamically This demonstration establishes the experimental method to use largescale time-domain-multiplexed cluster states in actual quantum operations, a fundamental component for realizing CV quantum computation. Largescale fault-tolerant universal quantum computation can be achieved by combining nonlinear feedforward operations [16] and non-Gaussian ancillary states [17,18] with the method in this work.
Sign-in/Register to view highlights & summary 
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call