- 标题
- 摘要
- 关键词
- 实验方案
- 产品
-
Generation of NOON States in Waveguide Arrays
摘要： A method to generate NOON states with three photons by injecting photons in an array of three waveguides is presented. Conditional measurements project the wave function in a given (desired) state. In passing, it is shown how the array of three waveguides, that e?ectively reproduces the interaction of three ?elds, may be reduced to the interaction of two ?elds.
关键词： waveguide arrays,NOON states
更新于2025-09-19 17:13:59
-
[IEEE 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) - Munich, Germany (2019.6.23-2019.6.27)] 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) - Towards Continuous Variables Quantum Computing with Trapped Ions
摘要： The usually employed methods of using spin states of atomic-like systems for quantum information encoding suffer from scalability issues. For example, it becomes very challenging to control a large number of trapped atomic ions each representing a physical qubit. The alternative approach would be to exploit the large Hilbert space provided by a near-harmonic trapping potential and encode the information in the oscillator states. We use sideband-resolved addressing of motional states in a single trapped 171Yb ion to demonstrate a conditional beam splitter gate. The conditional beam splitter (CBS) Hamiltonian |e??e|(a?b + ab?) swaps the quantum states of two motional modes of a trapped ion, conditioned on the ion’s internal state. It thus can be viewed as a SWAP gate and we utilize it to demonstrate SWAP tests, implement single shot parity measurements, and generate maximally entangled NOON states of motion. We discuss the spurious phase shifts that prevent the gate to be dubbed as universal and show that with an addition of an ancilla vacuum mode, the conditional beam splitter gate in trapped ion system can be used to construct a universal exponential-SWAP gate that is required for practical algorithms such as matrix inversion and other interesting applications.
关键词： SWAP gate,conditional beam splitter gate,NOON states,quantum computing,trapped ions
更新于2025-09-11 14:15:04