Why are quantum dots important for energy conversion & storage?

Semiconducting quantum dots (QDs) have received huge attention for energy conversion and storage due to their unique characteristics, such as quantum size effect, multiple exciton generation effect, large surface-to-volume ratio, high density of active sites, and so on.

Are graphene quantum dots a good energy storage device?

Specifically, for efficient energy storage devices like supercapacitors, graphene quantum dots exhibited notable characteristics, including desirably high surface area, electron conductivity, charge storage or capacitance, and electrochemical features for electrode components [, , ].

Are perovskite quantum dots suitable for optoelectronic devices?

Perovskite quantum dots (QDs) show an excellent application perspective in semiconductor optoelectronic devices. However, problems of ligand loss during the growth, purification, film formation, and storage process always induce the aggregation and ripening of QDs, adversely affecting QDs’ and QD-based devices’ performance.

How to benchmark the quantum storage performance of the current device?

To benchmark the quantum storage performances of the current device, we further encode time-bin qubits on the input pulses. Four states are prepared as input qubits: ∣ e 〉, ∣ l 〉, ∣ e 〉 + ∣ l 〉, and ∣ e 〉 + i ∣ l 〉, where ∣ e 〉 and ∣ l 〉 represent the early bin and the late bin, respectively.

How long can photonic qubits be stored in a 151 EU 3+ y 2 Sio 5 Crystal?

Here, we demonstrate quantum storage of photonic qubits for 1.021 milliseconds based on a laser-written optical waveguide fabricated in a 151 Eu 3+:Y 2 SiO 5 crystal.

Can photonic quantum memories be used in scalable applications?

Integrated operations of quantum memories could enable scalable application with low-power consumption. However, the photonic quantum storage lifetime in integrated devices has so far been limited to tens of microseconds, falling short of the requirements for practical applications.