Also we may try to extend qubit from two-dimension to higher-dimensional system, generally named as “qutrit” for dimension three and “qudit” for dimension d in more general case, the Hilbert space is extended from C2 to Cd. For example, we sometimes have “qutrit” when we consider a...
After that, a 10 μs optical pumping laser is applied to initialise the qutrit to the \(\left\vert 0\right\rangle\) state with 99.5% fidelity. When needed, a 729 nm pulse sequence is applied to prepare a certain initial state. Measurements of the observables {Ai} are performed through...
To characterize this highly-entangled state, we perform tomography on the full three-qutrit Hilbert space82, requiring a total of 729 circuits. We measure an informationally-complete set of projections to experimentally reconstruct the density matrix for\(\rho =\left\vert \Psi \right\rangle \left...
According to Bell’s theorem, certain entangled states cannot be simulated classically using local hidden variables (LHV). Suppose that we can augment LHV by some amount of classical communication. The question then arises as to how many bits are needed
In this work, we have demonstrated an efficient, highly parallelizable protocol for QND-MT of a state-of-the-art multi-qubit quantum computer, which works with both single-qubit measurement and generalized measurement—e.g., error syndrome measurements, PMs, etc. Our method is based on a self...
可见, 方案二通过引入一辅助的qutrit tata作为催化, 使非局域三维量子Toffoli门实现过程所需的物理资源得到了优化. (2) 方案二有如下特点: 1) 靶端的辅助粒子tata类似一个计数器. 当靶端的qutrits (c1c1,c2c2)的量子态均为|1⟩|1〉, 从而tata的态处于1+1+2=1 (mod3mod3)时(假设tata的初态为|2...
The structure can be a single platform performing simultaneously as a processor and a memory chip. This feature can contribute to the miniaturization of devices implemented on the platform. It could be applied in electronic andspintronic devicesoperating on the three-valued logic, including qutrit qu...
Klimov, A.B., Guzmán, R., Retamal, J.C., Saavedra, C.: Qutrit quantum computer with trapped ions. Phys. Rev. A 67, 062313 (2003) ADS Google Scholar Lo, H.K.: Classical-communication costin distributed quantum-information processing: A generalization of quantumcommunication complexity. Ph...
quantum computerWe realize the Landau–Streater (LS) and Werner–Holevo (WH) quantum channels for qutrits on IBM quantum computers. These channels correspond to the interaction between a qutrit and its environment that results in the globally unitarily covariant qutrit transformation violating the ...
A costly remedy exists with little practical use–qutrit or ququart exploitation can be achieved by adding much more complications to the QKD apparatus. This paper addresses the problem of efficient generation of cryptographic keys in QKD. This problem has been investigated by many researchers3–5....