Online Seminar: Kaumudibikash Goswami, UQ
Achieving a communication advantage with an experimental realisation of an indefinitely causal ordered scenario.
Image: Bumiputra/Pixabay
Indefinite causal order
SPEAKER: Mr Kaumudibikash Goswami
AFFILIATION: University of Queensland | ARC Centre of Excellence for Quantum Computation and Communication Technology
HOSTED BY: A/Prof Min-Hsiu Hsieh, UTS Centre for Quantum Software and Information
ABSTRACT:
In our daily life, we experience a fixed order of events. The notion of such a fixed causal order breaks down when we enter the quantum regime. In the quantum realm, it is possible to have situations where no definite causal structure can be attributed. Apart from the foundational aspect, such exotic causal structures are useful to achieve augmented communication.
In the first two parts of this talk, I will present our experimental realisation of an indefinitely causal ordered scenario and demonstrate how one can achieve a communication advantage out of it. In the last part, I will discuss how one can attribute several information-theoretic aspects to an arbitrary causal structure. In that part, I will define a notion of classical capacity for an indefinite causal order, and present several information-theoretic bounds obtained from our study.
MORE INFO:
I am a final year Ph.D. student from the University of Queensland. My research interest lies in quantum communication. In my Ph.D., I have done both experiment and theory. Being a frequent commuter from the abstract Hilbert space to the table-top optics experiment is a satisfaction in itself, and I am looking forward to maintaining the superposition state of theorist and experimentalist.
