| Budget Amount *help |
¥554,320,000 (Direct Cost: ¥426,400,000、Indirect Cost: ¥127,920,000)
Fiscal Year 2020: ¥54,600,000 (Direct Cost: ¥42,000,000、Indirect Cost: ¥12,600,000)
Fiscal Year 2019: ¥52,000,000 (Direct Cost: ¥40,000,000、Indirect Cost: ¥12,000,000)
Fiscal Year 2018: ¥99,970,000 (Direct Cost: ¥76,900,000、Indirect Cost: ¥23,070,000)
Fiscal Year 2017: ¥143,130,000 (Direct Cost: ¥110,100,000、Indirect Cost: ¥33,030,000)
Fiscal Year 2016: ¥204,620,000 (Direct Cost: ¥157,400,000、Indirect Cost: ¥47,220,000)
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| Outline of Final Research Achievements |
We have developed a prototype of an "ultrafast quantum simulator" (1G apparatus), which can simulate many-body electron dynamics with attosecond precision, by exciting a disordered ensemble of cold rubidium atoms in an optical dipole trap to the Rydberg states with an ultrafast laser for the first time. This prototype has been upgraded to an ordered crystal of Rydberg atoms in an optical lattice (2G apparatus), where we have created a "metal-like quantum gas", whose electron orbitals are spatially overlapped between neighboring atoms. We have further upgraded the apparatus with an arbitrary atom array assembled with optical tweezers (3G apparatus). 3G apparatus has extreme performance, where single-electron motion in a single atom in an arbitrary atom array can be observed with attosecond precision. A new technique has also been developed to trap atoms in a programmable disordered pattern, incorporated into 3G apparatus to enhance its operation mode for simulating disordered systems.
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