Quantum-coherent Science on a Solid Surface using Bottom-up Approach
Soo-hyon Phark | Center for Quantum Nanoscience (QNS)
Atom-by-atom addressability using a scanning tunnelling microscope (STM)[1] enables bottom up design of functional quantum devices. Furthermore, recent advance of a STM equipped with electron spin resonance (ESR) allows an atomic scale characterization of quantum states of individual spins on surface with an energy resolution down to nano electron volt.[2,3]
In this talk, I aim at an introduction to coherent quantum platforms crafted atom-by-atom on solid surfaces using an STM-ESR: First, utilization of single spins for sensing quantum objects with an atomic precision and a 10 neV energy resolution.[4]
Second, coherent multi-qubit systems using tailored spin nano structures on a surface, driven and read out in an all-electrical fashion.[5,6]
Third, atomic scale benchmarking of quantum electrodynamics and quantum thermodynamics using coupled spin qubits.[7] A survey on challenges in hand and outlook of this noble quantum platform will be followed.[8]
References
[1] D. M. Eigler, E. K. Schweizer, Nature 344, 524-526 (1990)
[2] S. Baumann et al. Science 350, 417-420 (2015)
[3] K. Yang et al. Science 366, 509-512 (2019)
[4] T. Esat et al. Nat. Nanotechnol. 19, 1466-1471 (2024)
[5] S. Phark et al. ACS Nano 17, 14144-1415118 (2023)
[6] Y. Wang et al. Science 382, 87-92 (2023)
[7] H. T. Bui et al. ACS Nano 18, 12187-12193 (2024)
[8] C. Wolf, A. J. Heinrich, S. Phark, ACS Nano 18, 28469-28479 (2024)
Location
RAC 1 - 3003