Orbital angular momentum multiplexed deterministic all-optical quantum teleportation

Abstract

Quantum teleportation is one of the most essential protocol in quantum information. In addition to increasing the scale of teleportation distance, improving its information transmission capacity is also vital importance for its practical applications. Recently, the orbital angular momentum (OAM) of light has attracted wide attention as an important degree of freedom for realizing multiplexing to increase information transmission capacity. Here we show that by utilizing the OAM multiplexed continuous variable entanglement, 9 OAM multiplexed channels of parallel all-optical quantum teleportation can be deterministically established in experiment. More importantly, our parallel all-optical quantum teleportation scheme can teleport OAM-superposition-mode coded coherent state, which demonstrates the teleportation of more than one optical mode with fidelity beating the classical limit and thus ensures the increase of information transmission capacity. Our results open the avenue for deterministically implementing parallel quantum communication protocols and provide a promising paradigm for constructing high-capacity all-optical quantum communication networks.

Robust squeezed light against mode mismatch using a self imaging optical parametric oscillator

“…Such robustness on the multiple cases of mode mismatch is made possible because of the fully degenerate nature of the self-imaging OPO, which cannot be accomplished by using a confocal OPO 18 or two single-mode OPOs 16 . Our work of mitigating the mode mismatching loss will have broad applications to quantum technologies based on squeezed light, e.g., quantum-enhanced gravitational-wave detection 11 , 12 , deterministic quantum teleportation 7 , measurement-based quantum computing 1 – 4 , and Gaussian boson sampling 5 , 6 .…”

“…Squeezed light is a versatile quantum resource for quantum information technologies 1 – 7 . In particular, in quantum metrology, it reduces noises in measurement below the standard quantum limit 8 – 10 ; a notable application is gravitational wave detectors 11 , 12 .…”

Enhancing robustness of noisy qutrit teleportation with Markovian memory

“…Nevertheless, to teleport quantum states of a real particle, such as a single photon, one needs to consider not only the two-level states (polarization), but also those multi-level states [25,38,50]. For example, the orbital angular momentum [16,37], the temporal mode [3,42], the frequency mode [30], and the spatial mode [24,45] of a single photon are all natural attributes of multi-level states, which are exploited as high-dimensional systems. It is worth mentioning that ref [22] has made an argument that as the dimension of the constituent qudits increases, the cost of maintaining a qudit in a fully entangled state also increases and the optimum cost per Hilbert dimension is attained at the local dimension of d = 3 (d is the dimensionality of Hilbert space).…”

Robust squeezed light against mode mismatch using a self imaging optical parametric oscillator

“…Squeezed light is a versatile quantum resource for quantum information technologies [1][2][3][4][5][6][7].…”