Quantum- Trapped Ion
Image example by ORCA-Quest
   

Experimental condition
Atom：Rb (Emission wavelength 780 nm)
Atom spacing：13 um
Scan mode：Ultraquiet scan mode
Binning：2x2
Exposure time：20 ms
Occupation probability of an atom in a lattice site : about 50 %

The benefits of ORCA-Quest for Neutral Atom Quantum Computing

In a neutral atom quantum computer, neutral atoms are trapped in vacuum with optical tweezers and aligned in a lattice. The use of a scientific camera is to see the fluorescence from each individual atom trapped in that lattice, and it can observe the position of trapped atoms and even their quantum states. A major requirement for a scientific camera is its low noise and high quantum efficiency to eliminate false positives, which means the camera misunderstands an atom emits fluorescence due to its low sensitivity even when there is no fluorescence from the atom. Since we use a light source that essentially emits single photons in the application, a special camera such as ORCA-Quest, which can take images in which the number of photons is counted one by one, would be very ideal.

Also, in order to perform error correction of qubits, another requirement for a camera is the camera must readout the state of the qubit as quickly as possible and some feedback must be applied immediately according to the state. In terms of data readout speed, a CMOS camera such as the ORCA-Quest is superior to a conventional CCD camera. 

I see that many people used EM-CCD cameras in their papers for neutral atom quantum computing, but recently I feel that more and more people are using sCMOS cameras because of their performance improvement. The technology of EM-CCD and sCMOS is advancing considerably, and quantum efficiency and noise performance of both cameras are in so high level. In this context, the deciding factor in choosing ORCA-Quest for our research was the photon number resolving (PNR) mode. We have high expectations for qCMOSⓇ technology because the PNR mode cannot be achieved with EM-CCD due to its sensor technology, and we believe it would be very interesting if we can find a way to effectively utilize the PNR mode.