Experimental Demonstration of Efficient High-dimensional Quantum Gates with Orbital Angular Momentum
arXiv:2010.05268
Abstract
Quantum gates are essential for the realization of quantum computer and have been implemented in various types of two-level systems. However, high-dimensional quantum gates are rarely investigated both theoretically and experimentally even that high-dimensional quantum systems exhibit remarkable advantages over two-level systems for some quantum information and quantum computing tasks. Here we experimentally demonstrate the four-dimensional X gate and its unique higher orders with the average conversion efficiency 93\%. All these gates are based on orbital-angular-momentum degree of freedom of single photons. Besides, a set of controlled quantum gates is implemented by use of polarization degree of freedom. Our work is an important step towards the goal of achieving arbitrary high-dimensional quantum circuit and paves a way for the implementation of high-dimensional quantum communication and computation.
arXiv comment7 pages, 5 figures; Accepted Quantum Science and Technology
References in corpus (20)
- Elementary gates for quantum computation
- Long-distance quantum communication with atomic ensembles and linear optics
- Quantum Simulation
- Quantum Communication
- Experimental One-Way Quantum Computing
- Free-Space distribution of entanglement and single photons over 144 km
- Quantum simulation of the Dirac equation
- Experimental high-dimensional two-photon entanglement and violations of generalised Bell inequalities
- Building logical qubits in a superconducting quantum computing system
- Toward the first quantum simulation with quantum speedup
- Quantum Cryptography using larger alphabets
- Higher-dimensional orbital angular momentum based quantum key distribution with mutually unbiased bases
- Quantum key distribution with higher-order alphabets using spatially-encoded qudits
- Variational quantum simulation of general processes
- Orbital angular momentum states enabling fiber-based high-dimensional quantum communication
- High-dimensional optical quantum logic in large operational spaces
- Vectorial light-matter interaction -- exploring spatially structured complex light fields
- Factoring with Qutrits: Shor's Algorithm on Ternary and Metaplectic Quantum Architectures
- On Secure Quantum Key Distribution Using Continuous Variables of Single Photons
- Two-Photon Spiral Imaging with Correlated Orbital Angular Momentum States