Quantum Theory

Many outstanding enterprises, including Google, Microsoft, Intel, and IBM, etc., have started to develop their own quantum computers or quantum software. Their ultimate goal is to construct large-scale universal quantum computers that are capable of providing overwhelming advantages over the classical one. Clearly, to achieve this long-term goal, a comprehensive test of the reliability of the interim, smaller-scale machines, such as those made available by IBM-Q or Rigetti Computing would be of fundamental importance. Given that many quantum information processing tasks can be naturally phrased as quantum circuits followed by measurements, a straightforward way to achieve the aforementioned goal is to cross-check the experimental outputs of these noisy, intermediate-scale quantum (NISQ) machines against well-established theoretical predictions. 

 

To this end, the research teams at QFort will continue to advance their theoretical stronghold in research areas such as quantum correlations (both spatial and temporal), opened quantum systems, as well as other aspects of quantum information theory or quantum foundations. By testing these predictions against NISQ machines, including the ones that we are developing at QFort, we achieve not only the desired benchmarking but would also gain a better understanding of the physical constraints that have to be overcome to achieve the long-term goal. In turn, with these new insights, it's conceivable that other efficient quantum algorithms that are appropriate for these NISQ devices may be developed, thus putting the power of quantum computing to good use even in the near future.

 

Of course, apart from quantum computing, the theoretical teams at QFort will also continue to strive for making breakthroughs in other aspects of quantum technologies, including, but not limited to the realization of quantum communication and quantum cryptographic devices.

 

 

 

Examples of Research Directions or Outcomes

Quantum vs Classical & Useful Quantum Effects

Quantum theory offers not only nonlocal correlations, but also other bizarre features that do not seem to fit well with our intuition. For instance, our everyday experience is that reading off the ...

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Device-independent Quantum Information

Nonlocal quantum correlations are not only intriguing, but also serve as an indispensable resource for device-independent (DI) quantum information processing. Within the DI paradigm,  conclusions a...

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Nonlocality and Quantum Foundations

Bell-nonlocality refers to the intriguing fact that certain correlations between spacelike-separated measurement outcomes cannot be explained by any local common cause. That this phenomenon follows...

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Examples of Research Directions or Outcomes