10.6084/M9.FIGSHARE.C.3756569.V1
Lukens, Joseph M.
Joseph M.
Lukens
Lougovski, Pavel
Pavel
Lougovski
Frequency-encoded photonic qubits for scalable quantum information processing
Figshare
2017
Collection
Space Science
29999 Physical Sciences not elsewhere classified
FOS: Physical sciences
Medicine
Neuroscience
20199 Astronomical and Space Sciences not elsewhere classified
69999 Biological Sciences not elsewhere classified
FOS: Biological sciences
80699 Information Systems not elsewhere classified
FOS: Computer and information sciences
19999 Mathematical Sciences not elsewhere classified
FOS: Mathematics
Plant Biology
2017-04-26
2017-04-26
2017
10.1364/optica.4.000008
10.6084/m9.figshare.c.3756569
CC BY
Among the objectives for large-scale quantum computation is the quantum interconnect: a device that uses photons to interface qubits that otherwise could not interact. However, the current approaches require photons indistinguishable in frequency—a major challenge for systems experiencing different local environments or of different physical compositions altogether. Here, we develop an entirely new platform that actually exploits such frequency mismatch for processing quantum information. Labeled “spectral linear optical quantum computation” (spectral LOQC), our protocol offers favorable linear scaling of optical resources and enjoys an unprecedented degree of parallelism, as an arbitrary N-qubit quantum gate may be performed in parallel on multiple N-qubit sets in the same linear optical device. Not only does spectral LOQC offer new potential for optical interconnects, but it also brings the ubiquitous technology of high-speed fiber optics to bear on photonic quantum information, making wavelength-configurable and robust optical quantum systems within reach.