all the quantum processing units create data which can't travel very far as is...decoherence. ionq figures out a way to convert /transmutate quantum data to telecom wave lenght. i asked gemini ai how does ionq do it? for kona, thinking again of cruz, maybe not all ...how to figure out the translation library? for energy subtraction/additions?:
"how does ionq transmutate the quantum data into telecom wavelength objects
IonQ's process of converting quantum data (encoded in visible photons) into telecom wavelength objects (photons at 1550 nm) is achieved using a technique called Quantum Frequency Conversion (QFC).
The transformation is a physical process, often involving nonlinear optics, and is essential because the visible light used by their trapped ion qubits cannot travel efficiently over long-haul fiber optic cables.
The Conversion Process (Difference-Frequency Generation)
While IonQ has announced the successful demonstration without releasing a specific scientific paper on their exact internal setup, the established method in quantum optics for this transformation is Difference-Frequency Generation (DFG), which works as follows:
Input: You start with the quantum signal, which is a visible-wavelength photon (e.g., in IonQ’s barium ion systems, the transition is in the visible range, around 493 nm or 650 nm).
The Engine (Pump Laser): A strong, classical pump laser (at a precisely chosen intermediate wavelength) is introduced.
The Medium: The visible quantum photon and the pump laser beam are coupled into a nonlinear crystal waveguide, often made of a material like Periodically Poled Lithium Niobate (PPLN).
The Transformation: Inside the nonlinear crystal, the visible quantum photon interacts with the classical pump photon. The energy of the incoming visible photon is subtracted from the energy of the pump photon.
Energy Conservation: E
visible
?
-E
pump
?
=E
telecom
?
.
Frequency/Wavelength Change: Since energy is inversely proportional to wavelength, this energy subtraction results in the creation of a new photon with a longer wavelength that falls into the telecom C-band (around 1550 nm).
Output: The original quantum state (e.g., polarization) is ideally preserved during this process and is now carried by the new telecom-wavelength photon. This new photon can travel hundreds of kilometers across existing fiber optic networks with low attenuation.
This frequency conversion is what "transmutates" the quantum information carrier from a laboratory-friendly visible light particle into a network-friendly infrared particle."
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