Single Photon Orbital Angular Momentum Transfer Based on Information Processing Technology

Abstract

The orbital angular momentum state (OAM) of the photon can be theoretically evaluated from minus infinity to infinity, and the different orbital angular momentum states are orthogonal to each other. Therefore, in recent years, it has attracted wide attention from the academic circle and the industry. The purpose of this paper is to study the characteristics of single photon orbital angular momentum transfer based on information processing technology and to provide Suggestions for its technical optimization. Based on the characteristics of the angular momentum state of photon orbit, this paper studies its application and related problems in information processing and transmission. In this paper, quantum multiuser communication technology is studied, and a multiuser communication scheme based on photon orbital angular momentum state is proposed. The scheme takes advantage of the orthogonality of different orbital angular momentum states of the photon and assumes that the sender and receiver share a pair of entangled orbital angular momentum states. On this basis, the spatial light modulator is used to modulate it to the entangled photon of the sender, so that the sending photon carries all the user’s information at the same time. Finally, the receiver accurately extracts the information of each sender by measuring the coincidence count and according to the specific receiving rules. Numerical simulation and experimental results show that the coincidence rate of different coding schemes is between 0 and 0.66, which proves the feasibility of the scheme.

Micro-Ring Resonator-Based Tunable Vortex Beam Emitter

“…Controlling the OAM order of an optical vortex beam can be applied to various ICT applications. In recent years, OAM has been an important resource in increasing the throughput of information channels in both classical and quantum information processing [ 42 , 43 , 44 ]. Among the existing solutions, the advantages of our proposed setup are the compactness of the setup, fast tuning of the OAM order, and the possibility of obtaining high orders.…”

New angular momentum state via the bosonic operator realization and its nonclassical property

“…As a kind of simple NGESs, squeezing vacuum state [7], pair coherent state [8], atomic coherent state [9,10] and angular momentum state [11,12] have some remarkable nonclassical effects, such as squeezing and sub-Poissionian distribution, entanglement and nonlocality, which can help one realize or improve some certain quantum information process * Author to whom any correspondence should be addressed. [13][14][15]. Recently, photon addition and subtraction, quantum scissor and quantum catalysis can be taken as a class of elementary but extremely effective way to prepare the NGESs because they can create the entanglement of multi-mode ones, even whatever the input Gaussian or product states.…”