Quantum computers are breaking the mold in how information is stored and transferred. Quantum information can physically be be stored in a much smaller compact manner using a photon, ion, or parts of an atom.
Classical computers use Bits where information is stored and transferred in 1s and 0s
Qudits (Quantum Dits) are units of quantum information greater than 2 (Bit) dimensions or states. So Qudits transfer and store information in 1s 0s 2s and possibly 3s/ 4s /5s/ 6s and so on.
Qu(D)its Advantages Over Qu(B)its
Qudit Systems process more information per unit- having more units of information than 1s or 0s present in Qubits, Qudits increase the processing power of a quantum computer
[For example a two Qudit(d32) System could process the same information as a ten Qubit(d2) system]
Qudit systems are more stable – Fewer moving parts needed therefore less issues with system error. Currently quantum material is difficult to stabilize for long periods of time.
Qudit systems are more scalable – Photons and other quantum material typically don’t work easily together and with less material present you can scale information capabilities of a Quantum Computer.
Qudits save money – Qudits require less sub-atomic or atomic material to produce units of information. Quantum material can be expensive to produce, therefore Qudits can save money creating and operating a quantum computer.
A Qudit’s dimensions or states can be defined with a specified d = (number of states)
Qubit – 2 Dimensions/States
Qutrit – 3 Dimensions/States
Ququad – 4 Dimensions/States
Qupent – 5 Dimensions/States