Novel Method Developed to Measure Quantum State

Novel Method Developed to Measure Quantum State

Researches from the University of Rochester have been successful in measuring a '27-dimensional quantum state' in a single experiment without post-processing by applying 'direct measurement' method.

Scientists can now directly measure the state of quantum system by using this novel method of 'direct measurement'. This method was for the first time created by scientists at the National Research Council Canada in measuring the position and momentum of photons in 2011.

Generally, a technique called as 'quantum tomography' is used in measuring the quantum state. But, it has one disadvantage that it makes the process multistage and time consuming.

Robert Boyd, Prof. of Optics and Physics at the University of Rochester and Canada Excellence Research Chair in Quantum Nonlinear Optics at the University of Ottawa, has found an exciting solution alternative to quantum tomography.

He claimed that the novel direct quantum method has been proved crucial in forming high security quantum communications system along with ways to explore the concepts of quantum mechanics.

"As the field of quantum information continues to advance, we expect direct measurement to play an increasingly important role in this", said Robert Boyd.

Robert said while using direct quantum method, he has also been able to measure quantum state associated with the orbital-angular momentum.


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