What is Quantum Frequency?

At the very smallest scales, the energy of a particle is proportional to its frequency. This was a surprise discovery of Max Planck in 1900.

The new method may be useful in improving the quality of single photon sources, such as quantum dots, which can suffer from inhomogeneous broadening that reduces their utility. It also could be used to improve readout fidelity.
What is it?

Quantum frequency is the rate at which everything vibrates, including our own body’s cells. The Healy quantum frequency device matches your specific symptoms and their frequencies to create a personalized microcurrent therapy that is applied to the body using ear clips electrodes or the wrist band.

The Healy is designed to measure and improve your physical, emotional, mental, and spiritual health. It analyzes your auric energy life force, commonly referred to as Bio magnetic energy, to find the frequencies needed for optimal healing and wellbeing.

The team used a technique known as quantum frequency conversion to bridge the spectral gap between visible and telecom wavelengths. Existing methods of doing this, such as sum/difference frequency generation and four-wave mixing Bragg scattering, are prone to broadband noise from the pump laser(s). This limits their effectiveness for linking long-distance quantum memories in fiber-based networks. The team’s new method is much less prone to noise and could be applied to other applications of QFC.
How does it work?

In the world of quantum physics, everything vibrates at different frequencies. Each vibration produces a corresponding geometric form, like the particles in crystals. This phenomenon is called wave-particle duality.

The ability to electrostimulate living tissue at the cellular level and energize the auric energy life force has huge medical implications, says Cappellaro. This technology could potentially allow scientists to detect signals that are too small to measure with current quantum sensing techniques.

Quantum frequency conversion (QFC) is a key process for connecting quantum memories in fiber-based quantum networks. Current methods for visible-telecom QFC are prone to broad-band noise generated by the pump laser(s). We propose a new method that uses third-order sum/difference frequency generation to upconvert and downconvert optical beams with spectrally separated signal and idler wavelengths, bypassing the need for expensive wideband insertion loss limiting optics. The scheme is demonstrated for the first time in a QFC link between 606 nm rare-earth-ion quantum memory and 1550 nm nitrogen-vacancy centers in diamond.
What are the benefits?

Quantum frequency manipulation can be used to improve a wide range of optical systems, from quantum sensors to quantum memories. It can also make existing systems more precise – for example, the clocks in your phone and the signals from GPS satellites that tell you where you are are measured at frequencies that can be affected by a lot of noise.

Our work shows that low-noise quantum frequency conversion (QFC) can be used to connect quantum memory devices operating at different wavelengths in fiber optic networks. This is especially important for quantum memory systems based on semiconductor quantum dots, which suffer from decoherence in their atomic states.

Our method uses third-order sum/difference frequency generation to achieve QFC between the visible and telecom bands, which is more efficient than current methods that use a single long wavelength pump laser to bridge large spectral gaps. This is important because the amount of time it takes to send a quantum signal over a long distance directly correlates with its noise, and higher efficiency means lower noise.
Are there any side effects?

In a non-invasive holistic paradigm, quantum biological order is restored electromagnetically with physiologic PicoTesla range magnetic fields that are targeted to the area of disequilibria. This includes balancing the hormone system, regulating blood flow to the brain and supporting the musculoskeletal system.

Unlike the jumble of frequencies that make up our everyday light, a specialized light source known as a frequency microcomb oscillates in unison, producing solitary pulses that can be measured with high precision. These precise measurements have important applications in astrophysics and navigation.

The researchers developed an efficient on-chip upconversion single-photon detector to perform QFC. Their results demonstrate that it is possible to achieve a low noise estimate of the frequency, even in the presence of shot noise and quantum projection noise (Fig. 6c, lower). The experimental result also shows the potential of chip-scale QFC-based systems in heterogeneous configurations. The results provide a pathway for future high-efficiency, low-noise single-photon detection applications. The work was supported by the National Science Foundation and the Army Research Office.

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